diff --git a/plugins/com.gwtplugins.gdt.eclipse.core/src/com/google/gdt/eclipse/core/projects/IWebAppProjectCreator.java b/plugins/com.gwtplugins.gdt.eclipse.core/src/com/google/gdt/eclipse/core/projects/IWebAppProjectCreator.java
index e9b0063b..244ad181 100644
--- a/plugins/com.gwtplugins.gdt.eclipse.core/src/com/google/gdt/eclipse/core/projects/IWebAppProjectCreator.java
+++ b/plugins/com.gwtplugins.gdt.eclipse.core/src/com/google/gdt/eclipse/core/projects/IWebAppProjectCreator.java
@@ -28,6 +28,7 @@
 import java.io.UnsupportedEncodingException;
 import java.net.MalformedURLException;
 import java.net.URI;
+import java.util.List;
 
 /**
  * Creates web app projects populated with files relevant to the selected natures.
@@ -96,11 +97,10 @@ void create(IProgressMonitor monitor) throws CoreException, MalformedURLExceptio
   void setBuildMaven(boolean buildMaven);
 
   /**
-   * Returns the created Java project. This is available half way through the creation process.
-   *
-   * @return the java projeect.
+   * Returns the created Java projects. This is available half way through the creation process.
+   * @return the java project.
    */
-  IJavaProject[] getCreatedJavaProjects();
+  List<IJavaProject> getCreatedJavaProjects();
 
   /**
    * Returns build a Maven Project.
diff --git a/plugins/com.gwtplugins.gdt.eclipse.maven/src/com/google/gdt/eclipse/maven/projects/MavenEnablingWebAppCreatorParicipant.java b/plugins/com.gwtplugins.gdt.eclipse.maven/src/com/google/gdt/eclipse/maven/projects/MavenEnablingWebAppCreatorParicipant.java
index 5a6f8048..9fc0fc91 100644
--- a/plugins/com.gwtplugins.gdt.eclipse.maven/src/com/google/gdt/eclipse/maven/projects/MavenEnablingWebAppCreatorParicipant.java
+++ b/plugins/com.gwtplugins.gdt.eclipse.maven/src/com/google/gdt/eclipse/maven/projects/MavenEnablingWebAppCreatorParicipant.java
@@ -17,9 +17,11 @@
 import org.eclipse.m2e.core.MavenPlugin;
 import org.eclipse.m2e.core.project.IProjectConfigurationManager;
 
+import java.util.List;
+
 public class MavenEnablingWebAppCreatorParicipant implements IWebAppProjectCreator.Participant {
 
-  private IJavaProject[] javaProjects;
+  private List<IJavaProject> javaProjects;
 
   @Override
   public void updateWebAppProjectCreator(IWebAppProjectCreator webAppProjectCreator) {
@@ -42,9 +44,9 @@ private void runJob() {
       protected IStatus run(IProgressMonitor monitor) {
         // Turn on the Maven nature
         try {
-          for(int i=0;i<javaProjects.length;i++)
+          for(int i=0;i<javaProjects.size();i++)
           {
-            NatureUtils.addNature(javaProjects[i].getProject(), MavenUtils.MAVEN2_NATURE_ID);
+            NatureUtils.addNature(javaProjects.get(i).getProject(), MavenUtils.MAVEN2_NATURE_ID);
           }
         } catch (CoreException e1) {
           e1.printStackTrace();
@@ -56,9 +58,9 @@ protected IStatus run(IProgressMonitor monitor) {
         // Maven update project will add the Maven dependencies to the classpath
         IProjectConfigurationManager projectConfig = MavenPlugin.getProjectConfigurationManager();
         try {
-          for(int i=0;i<javaProjects.length;i++)
+          for(int i=0;i<javaProjects.size();i++)
           {
-            projectConfig.updateProjectConfiguration(javaProjects[i].getProject(), monitor);
+            projectConfig.updateProjectConfiguration(javaProjects.get(i).getProject(), monitor);
           }
         } catch (CoreException e) {
           // TODO(${user}): Auto-generated catch block
diff --git a/plugins/com.gwtplugins.gdt.eclipse.suite/.settings/org.eclipse.core.resources.prefs b/plugins/com.gwtplugins.gdt.eclipse.suite/.settings/org.eclipse.core.resources.prefs
index 99f26c02..a79d8f02 100644
--- a/plugins/com.gwtplugins.gdt.eclipse.suite/.settings/org.eclipse.core.resources.prefs
+++ b/plugins/com.gwtplugins.gdt.eclipse.suite/.settings/org.eclipse.core.resources.prefs
@@ -1,2 +1,5 @@
 eclipse.preferences.version=1
+encoding//project_templates/client_server_shared/client/.settings/org.eclipse.jdt.core.prefs=UTF-8
+encoding//project_templates/client_server_shared/server/.settings/org.eclipse.jdt.core.prefs=UTF-8
+encoding//project_templates/client_server_shared/shared/.settings/org.eclipse.jdt.core.prefs=UTF-8
 encoding/<project>=UTF-8
diff --git a/plugins/com.gwtplugins.gdt.eclipse.suite/project_templates/client_server_shared/client/src/_PACKAGENAME_/ui.gwt.xml b/plugins/com.gwtplugins.gdt.eclipse.suite/project_templates/client_server_shared/client/src/_PACKAGENAME_/ui.gwt.xml
index 6c6f6fb8..b5d72b4b 100644
--- a/plugins/com.gwtplugins.gdt.eclipse.suite/project_templates/client_server_shared/client/src/_PACKAGENAME_/ui.gwt.xml
+++ b/plugins/com.gwtplugins.gdt.eclipse.suite/project_templates/client_server_shared/client/src/_PACKAGENAME_/ui.gwt.xml
@@ -25,7 +25,4 @@
 
   <!-- Specify the paths for translatable code                    -->
   <source path='ui'/>
-
-  <!-- allow Super Dev Mode -->
-  <add-linker name="xsiframe"/>
 </module>
diff --git a/plugins/com.gwtplugins.gdt.eclipse.suite/src/com/google/gdt/eclipse/suite/wizards/NewWebAppTemplateProjectWizard.java b/plugins/com.gwtplugins.gdt.eclipse.suite/src/com/google/gdt/eclipse/suite/wizards/NewWebAppTemplateProjectWizard.java
index 2705bd21..4a030b16 100644
--- a/plugins/com.gwtplugins.gdt.eclipse.suite/src/com/google/gdt/eclipse/suite/wizards/NewWebAppTemplateProjectWizard.java
+++ b/plugins/com.gwtplugins.gdt.eclipse.suite/src/com/google/gdt/eclipse/suite/wizards/NewWebAppTemplateProjectWizard.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright 2011 Google Inc. All Rights Reserved.
+ * Copyright 2024 GWT Eclipse Plugin. All Rights Reserved.
  *
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
@@ -45,6 +45,12 @@
 public class NewWebAppTemplateProjectWizard extends NewElementWizard implements INewWizard {
 
   private NewWebAppTemplateProjectWizardPage newProjectWizardPage;
+  private String projectName;
+  private boolean useGWT;
+  private IPath gwtSdkContainerPath;
+  private String packageName;
+  private URI locationURI;
+  private ProjectTemplate template;
 
   public NewWebAppTemplateProjectWizard() {
   }
@@ -74,6 +80,12 @@ public void init(IWorkbench workbench, IStructuredSelection selection) {
    */
   @Override
   public boolean performFinish() {
+    projectName = newProjectWizardPage.getProjectName();
+    useGWT = newProjectWizardPage.useGWT();
+    gwtSdkContainerPath = newProjectWizardPage.getGWTSdkContainerPath();
+    packageName = newProjectWizardPage.getPackage();
+    locationURI = newProjectWizardPage.getCreationLocationURI();
+    template = newProjectWizardPage.getTemplate();
 
     /**
      * HACK: We need to make sure that the DebugUITools plugin (and the DebugUIPlugin plugin) is loaded via the main
@@ -96,13 +108,7 @@ public boolean performFinish() {
   @Override
   protected void finishPage(IProgressMonitor monitor) throws InterruptedException, CoreException {
     try {
-      String projectName = newProjectWizardPage.getProjectName();
-      boolean useGWT = newProjectWizardPage.useGWT();
-      IPath gwtSdkContainerPath = newProjectWizardPage.getGWTSdkContainerPath();
-      String packageName = newProjectWizardPage.getPackage();
-      URI locationURI = newProjectWizardPage.getCreationLocationURI();
-
-      WebAppTemplateProjectCreator wapc = new WebAppTemplateProjectCreator(newProjectWizardPage.getTemplate());
+      WebAppTemplateProjectCreator wapc = new WebAppTemplateProjectCreator(template);
       wapc.setProjectName(projectName);
       wapc.setPackageName(packageName);
       wapc.setLocationURI(locationURI);
diff --git a/plugins/com.gwtplugins.gdt.eclipse.suite/src/com/google/gdt/eclipse/suite/wizards/NewWebAppTemplateProjectWizardPage.java b/plugins/com.gwtplugins.gdt.eclipse.suite/src/com/google/gdt/eclipse/suite/wizards/NewWebAppTemplateProjectWizardPage.java
index 61297944..a18611d9 100644
--- a/plugins/com.gwtplugins.gdt.eclipse.suite/src/com/google/gdt/eclipse/suite/wizards/NewWebAppTemplateProjectWizardPage.java
+++ b/plugins/com.gwtplugins.gdt.eclipse.suite/src/com/google/gdt/eclipse/suite/wizards/NewWebAppTemplateProjectWizardPage.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright 2011 Google Inc. All Rights Reserved.
+ * Copyright 2024 GWT Eclipse Plugin. All Rights Reserved.
  *
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
diff --git a/plugins/com.gwtplugins.gdt.eclipse.suite/src/com/google/gdt/eclipse/suite/wizards/ProjectTemplate.java b/plugins/com.gwtplugins.gdt.eclipse.suite/src/com/google/gdt/eclipse/suite/wizards/ProjectTemplate.java
index 8780c435..15110839 100644
--- a/plugins/com.gwtplugins.gdt.eclipse.suite/src/com/google/gdt/eclipse/suite/wizards/ProjectTemplate.java
+++ b/plugins/com.gwtplugins.gdt.eclipse.suite/src/com/google/gdt/eclipse/suite/wizards/ProjectTemplate.java
@@ -1,6 +1,17 @@
-/**
+/*******************************************************************************
+ * Copyright 2024 GWT Eclipse Plugin. All Rights Reserved.
  *
- */
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *******************************************************************************/
 package com.google.gdt.eclipse.suite.wizards;
 
 import org.apache.commons.io.FileUtils;
diff --git a/plugins/com.gwtplugins.gdt.eclipse.suite/src/com/google/gdt/eclipse/suite/wizards/WebAppProjectCreator.java b/plugins/com.gwtplugins.gdt.eclipse.suite/src/com/google/gdt/eclipse/suite/wizards/WebAppProjectCreator.java
index 4fa7f16c..7d9dcb51 100644
--- a/plugins/com.gwtplugins.gdt.eclipse.suite/src/com/google/gdt/eclipse/suite/wizards/WebAppProjectCreator.java
+++ b/plugins/com.gwtplugins.gdt.eclipse.suite/src/com/google/gdt/eclipse/suite/wizards/WebAppProjectCreator.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright 2011 Google Inc. All Rights Reserved.
+ * Copyright 2024 GWT Eclipse Plugin. All Rights Reserved.
  *
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
@@ -77,6 +77,7 @@
 import java.net.URI;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Collections;
 import java.util.List;
 
 /**
@@ -654,8 +655,10 @@ public IStatus runInWorkspace(IProgressMonitor monitor) {
    * Return the Java project created. This will only work half way through the process.
    */
   @Override
-  public IJavaProject[] getCreatedJavaProjects() {
-    return new IJavaProject[] {createdJavaProject};
+  public List<IJavaProject> getCreatedJavaProjects() {
+    List<IJavaProject> list = new ArrayList<>();
+    list.add(createdJavaProject);
+    return Collections.unmodifiableList(list);
   }
 
   /**
diff --git a/plugins/com.gwtplugins.gdt.eclipse.suite/src/com/google/gdt/eclipse/suite/wizards/WebAppTemplateProjectCreator.java b/plugins/com.gwtplugins.gdt.eclipse.suite/src/com/google/gdt/eclipse/suite/wizards/WebAppTemplateProjectCreator.java
index e16daaa6..72fadb7a 100644
--- a/plugins/com.gwtplugins.gdt.eclipse.suite/src/com/google/gdt/eclipse/suite/wizards/WebAppTemplateProjectCreator.java
+++ b/plugins/com.gwtplugins.gdt.eclipse.suite/src/com/google/gdt/eclipse/suite/wizards/WebAppTemplateProjectCreator.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright 2011 Google Inc. All Rights Reserved.
+ * Copyright 2024 GWT Eclipse Plugin. All Rights Reserved.
  *
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
@@ -51,16 +51,18 @@
 import org.eclipse.jdt.ui.PreferenceConstants;
 import org.osgi.service.prefs.BackingStoreException;
 
-import java.io.BufferedWriter;
 import java.io.File;
 import java.io.FilenameFilter;
 import java.io.IOException;
 import java.net.URI;
 import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Paths;
+import java.nio.file.StandardOpenOption;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Collections;
 import java.util.List;
 import java.util.Stack;
 
@@ -112,7 +114,7 @@ private static void reformatJavaFiles(File outDir) throws CoreException {
   private URI locationURI;
   private String packageBaseName;
   private String projectBaseName;
-  private IJavaProject[] createdJavaProjects;
+  private List<IJavaProject> createdJavaProjects;
   private IProgressMonitor monitor;
   private Sdk gwtSdk;
   private ProjectTemplate projectTemplate;
@@ -149,7 +151,7 @@ public void create(IProgressMonitor monitor)
 
     List<String> projectNames = projectTemplate.getProjectNames(projectBaseName);
     IProject[] project = new IProject[projectNames.size()];
-    createdJavaProjects = new IJavaProject[projectNames.size()];
+    createdJavaProjects = new ArrayList<>();
     for(int i=0;i<projectNames.size();i++)
     {
       project[i] = createProject(monitor, projectNames.get(i));
@@ -168,7 +170,7 @@ public void create(IProgressMonitor monitor)
       NatureUtils.addNatures(project[i], projectTemplate.getNatureIds(i));
 
       // Create the java project
-      createdJavaProjects[i] = JavaCore.create(project[i]);
+      createdJavaProjects.add( JavaCore.create(project[i]) );
 
       // Create a source folder and add it to the raw classpath
       IResource warFolder = project[i].findMember(WebAppUtilities.DEFAULT_WAR_DIR_NAME);
@@ -179,7 +181,7 @@ public void create(IProgressMonitor monitor)
         WebAppUtilities.setDefaultWarSettings(project[i]);
 
         // Set the default output directory
-        WebAppUtilities.setOutputLocationToWebInfClasses(createdJavaProjects[i], monitor);
+        WebAppUtilities.setOutputLocationToWebInfClasses(createdJavaProjects.get(i), monitor);
         /**
          * Copy files into the web-inf lib folder. This code assumes that it is running in a context that has a workspace
          * lock.
@@ -187,7 +189,7 @@ public void create(IProgressMonitor monitor)
         Sdk gwtSdk = getGWTSdk();
         setGwtSdk(gwtSdk);
         if (gwtSdk != null) {
-          new GWTUpdateWebInfFolderCommand(createdJavaProjects[i], gwtSdk).execute();
+          new GWTUpdateWebInfFolderCommand(createdJavaProjects.get(i), gwtSdk).execute();
         }
       }
       reformatJavaFiles(dir);
@@ -214,8 +216,12 @@ private void replacePackageNames(IProject iProject, File dir) throws IOException
         String name = file.getName();
         name = name.replace("_PACKAGENAME_", packageBaseName.replace('.', File.separatorChar));
         File newFile = new File(file.getParentFile(), name);
-        newFile.getParentFile().mkdirs();
-        file.renameTo(newFile);
+        Files.createDirectories(newFile.getParentFile().toPath());
+        boolean ret = file.renameTo(newFile);
+        if(ret == false)
+        {
+          throw new IOException("Could not rename");
+        }
         file = newFile;
       }
       if(file.getName().contains("_.._"))
@@ -223,8 +229,12 @@ private void replacePackageNames(IProject iProject, File dir) throws IOException
         String name = file.getName();
         name = name.replace("_.._", "../");
         File newFile = new File(file.getParentFile(), name);
-        newFile.getParentFile().mkdirs();
-        file.renameTo(newFile);
+        Files.createDirectories(newFile.getParentFile().toPath());
+        boolean ret = file.renameTo(newFile);
+        if(ret == false)
+        {
+          throw new IOException("Could not rename");
+        }
         file = newFile;
       }
       if(file.isDirectory())
@@ -248,7 +258,7 @@ private void replacePackageNames(IProject iProject, File dir) throws IOException
    * @throws IOException
    */
   public static void replaceInFile(String file, String pattern, String replacement) throws IOException {
-    Charset cset = Charset.defaultCharset();
+    Charset cset = StandardCharsets.UTF_8;
     java.nio.file.Path path = Paths.get(file);
     if (Files.exists(path)) {
       if (Files.size(path) > 1000000) {
@@ -257,9 +267,7 @@ public static void replaceInFile(String file, String pattern, String replacement
       byte[] data = Files.readAllBytes(path);
       String str = new String(data, cset);
       String newStr = str.replaceAll(pattern, replacement);
-      BufferedWriter writer = Files.newBufferedWriter(path, cset);
-      writer.write(newStr);
-      writer.close();
+      Files.writeString(path, newStr, StandardOpenOption.TRUNCATE_EXISTING, StandardOpenOption.WRITE);
     }
   }
 
@@ -407,8 +415,8 @@ private Sdk getSdk(String containerId, SdkManager<? extends Sdk> sdkManager) {
    * Return the Java project created. This will only work half way through the process.
    */
   @Override
-  public IJavaProject[] getCreatedJavaProjects() {
-    return createdJavaProjects;
+  public List<IJavaProject> getCreatedJavaProjects() {
+    return Collections.unmodifiableList(createdJavaProjects);
   }
 
   /**
diff --git a/plugins/com.gwtplugins.gwt.eclipse.wtp/src/com/google/gwt/eclipse/wtp/projects/WtpFacetCreatorParicipant.java b/plugins/com.gwtplugins.gwt.eclipse.wtp/src/com/google/gwt/eclipse/wtp/projects/WtpFacetCreatorParicipant.java
index 4b648769..89852b36 100644
--- a/plugins/com.gwtplugins.gwt.eclipse.wtp/src/com/google/gwt/eclipse/wtp/projects/WtpFacetCreatorParicipant.java
+++ b/plugins/com.gwtplugins.gwt.eclipse.wtp/src/com/google/gwt/eclipse/wtp/projects/WtpFacetCreatorParicipant.java
@@ -1,5 +1,7 @@
 package com.google.gwt.eclipse.wtp.projects;
 
+import java.util.List;
+
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IProgressMonitor;
 import org.eclipse.core.runtime.IStatus;
@@ -19,7 +21,7 @@
 
 public class WtpFacetCreatorParicipant implements IWebAppProjectCreator.Participant {
 
-  private IJavaProject[] javaProjects;
+  private List<IJavaProject> javaProjects;
   private IFacetedProjectListener projectFacetListener;
  
   @Override
diff --git a/pom.xml b/pom.xml
index 517403a2..b4e937dc 100644
--- a/pom.xml
+++ b/pom.xml
@@ -11,7 +11,7 @@
   <properties>
     <tycho.version>3.0.1</tycho.version>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <eclipse.target>2023-09</eclipse.target> <!-- TODO change to neon -->
+    <eclipse.target>2023-09</eclipse.target>
 
     <!-- Repositories that Tycho will use to resolve compilation dependencies. -->
     <eclipse-repo.url>https://download.eclipse.org/releases/${eclipse.target}</eclipse-repo.url>