Unable to compile on mac

[Gaisuru]

I am trying to fix the build number in my Team City build, but I keep getting this error and warning.

The Warning
/Library/TeamCity/buildAgent/work/dfa28b56baa89f86/TestApp//TraceableLive.Droid/TestApp.Droid.csproj (Build) ->
[15:40:04][Step 2/3] /Library/TeamCity/buildAgent/work/dfa28b56baa89f86/TestApp/packages/Readify.Xamarin.MSBuild.Android.1.1.0/build/Readify.Xamarin.MSBuild.Android.targets (OverrideAndroidManifestVersion target) ->
[15:40:04][Step 2/3] /Library/TeamCity/buildAgent/work/dfa28b56baa89f86/TestApp/packages/Readify.Xamarin.MSBuild.Android.1.1.0/build/Readify.Xamarin.MSBuild.Android.targets (CoreOverrideAndroidManifestVersion) ->
[15:40:04][Step 2/3]
[15:40:04][Step 2/3] /Library/TeamCity/buildAgent/work/dfa28b56baa89f86/TestApp/packages/Readify.Xamarin.MSBuild.Android.1.1.0/build/Readify.Xamarin.MSBuild.Android.targets: warning : Target '_ValidateAndroidPackageProperties', not found in the project

[15:40:04][Step 2/3] Errors:
/Library/TeamCity/buildAgent/work/dfa28b56baa89f86/TestApp/TestApp.Droid/TestApp.Droid.csproj (Build) ->
[15:40:04][Step 2/3] /Library/TeamCity/buildAgent/work/dfa28b56baa89f86/TestApp/packages/Readify.Xamarin.MSBuild.Android.1.1.0/build/Readify.Xamarin.MSBuild.Android.targets (OverrideAndroidManifestVersion target) ->
[15:40:04][Step 2/3] /Library/TeamCity/buildAgent/work/dfa28b56baa89f86/TestApp/packages/Readify.Xamarin.MSBuild.Android.1.1.0/build/Readify.Xamarin.MSBuild.Android.targets (CoreOverrideAndroidManifestVersion) ->
[15:40:04][Step 2/3](CoreOverrideAndroidManifestVersion target) ->
[15:40:04][Step 2/3]
[15:40:04][Step 2/3] /Library/TeamCity/buildAgent/work/dfa28b56baa89f86/TestApp/packages/Readify.Xamarin.MSBuild.Android.1.1.0/build/Readify.Xamarin.MSBuild.Android.targets: error : AppVersion '1.0.0.1' must be of the form 'n.n.n.n' where 'n' is a positive integer.

[tathamoddie]

The issue title indicates you're compiling on xbuild, via Mono? Can you confirm?

This check is implemented at https://github.com/Readify/Xamarin.Msbuild/blob/master/Android/Readify.Xamarin.MSBuild.Android.targets#L17

Even if you tried removing that check temporarily, I'm not sure how the task implementation itself (https://github.com/Readify/Xamarin.Msbuild/blob/master/Android/Readify.Xamarin.MSBuild.Android.targets#L44) would fare in the xbuild runner, as it also depends on C#.

[Gaisuru]

I am running xbuild via Mono. Just not sure what in that check/why it is failing.