diff --git a/pyproject.toml b/pyproject.toml
index 2113cdc..8ec331d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -17,7 +17,7 @@ namespaces = true
 # ----------------------------------------- Project Metadata -------------------------------------
 #
 [project]
-version = "0.0.0.dev47"
+version = "0.0.0.dev48"
 name = "PySerials"
 dependencies = [
     "jsonschema >= 4.21.0, < 5",
@@ -26,8 +26,8 @@ dependencies = [
     "ruamel.yaml >= 0.17.32, < 0.18", # https://yaml.readthedocs.io/en/stable/
     "ruamel.yaml.string >= 0.1.1, < 1",
     "tomlkit >= 0.11.8, < 0.12", # https://tomlkit.readthedocs.io/en/stable/,
-    "MDit == 0.0.0.dev44",
-    "ExceptionMan == 0.0.0.dev44",
+    "MDit == 0.0.0.dev45",
+    "ExceptionMan == 0.0.0.dev45",
     "ProtocolMan == 0.0.0.dev2",
 ]
 requires-python = ">=3.10"
diff --git a/requirements.txt b/requirements.txt
index a099f8b..405b89f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,6 +4,6 @@ jsonpath-ng >= 1.6.1, < 2
 ruamel.yaml >= 0.17.32, < 0.18
 ruamel.yaml.string >= 0.1.1, < 1
 tomlkit >= 0.11.8, < 0.12
-MDit == 0.0.0.dev44
-ExceptionMan == 0.0.0.dev44
+MDit == 0.0.0.dev45
+ExceptionMan == 0.0.0.dev45
 ProtocolMan == 0.0.0.dev2
\ No newline at end of file
diff --git a/src/pyserials/exception/read.py b/src/pyserials/exception/read.py
index 80c22d7..7622a21 100644
--- a/src/pyserials/exception/read.py
+++ b/src/pyserials/exception/read.py
@@ -142,9 +142,10 @@ def __init__(
             self.problem = cause.problem.strip()
             if cause.context:
                 self.context = cause.context.strip()
-                self.context_line = cause.context_mark.line + 1
-                self.context_column = cause.context_mark.column + 1
-                self.context_data_type = cause.context_mark.name.removeprefix("<").removesuffix(">")
+                if cause.context_mark:
+                    self.context_line = cause.context_mark.line + 1
+                    self.context_column = cause.context_mark.column + 1
+                    self.context_data_type = cause.context_mark.name.removeprefix("<").removesuffix(">")
         elif isinstance(cause, _json.JSONDecodeError):
             self.problem = cause.msg
             self.problem_line = cause.lineno
diff --git a/src/pyserials/update.py b/src/pyserials/update.py
index d695049..a0a59c0 100644
--- a/src/pyserials/update.py
+++ b/src/pyserials/update.py
@@ -203,6 +203,7 @@ def getter_function(path: str, default: Any = None, search: bool = False):
                 raise_error(
                     description_template=f"Code at {{path_invalid}} raised an exception: {e}\n{code_str_full}",
                     path_invalid=current_path,
+                    exception=e,
                 )
 
         def get_address_value(match: _re.Match | str, return_all_matches: bool = False, from_code: bool = False):
@@ -323,7 +324,7 @@ def string_filler_unpack(match: _re.Match):
                     values = get_address_value(path)
             return self._unpack_string_joiner.join([self._stringer(val) for val in values])
 
-        def raise_error(path_invalid: str, description_template: str):
+        def raise_error(path_invalid: str, description_template: str, exception: Exception | None = None):
             raise _exception.update.PySerialsUpdateTemplatedDataError(
                 description_template=description_template,
                 path_invalid=path_invalid,
@@ -333,7 +334,7 @@ def raise_error(path_invalid: str, description_template: str):
                 data_source=self._data,
                 template_start=self._marker_start_value,
                 template_end=self._marker_end_value,
-            )
+            ) from exception
 
         self._check_endless_loop(templ, current_chain)
 
@@ -361,7 +362,7 @@ def raise_error(path_invalid: str, description_template: str):
                 unpack_value = fill_nested_values(unpack_value)
                 submatch_list = self._pattern_list.fullmatch(unpack_value)
                 if submatch_list:
-                    return get_address_value(unpack_value, return_all_matches=True)
+                    return get_address_value(submatch_list, return_all_matches=True)
                 return get_address_value(unpack_value)
             # Handle strings
             code_blocks_filled = self._pattern_code.sub(