I have a simple C#/MAUI app – all classes in the same namespace. Getting this weird error XAGAP7000 all of a sudden, and Googling doesn’t seem to help. I tried repairing the Visual Studio installation as well. Double-checked the XAML (see below). Totally flummoxed!

Severity    Code    Description Project File    Line    Suppression State
Error (active)  XAGAP7000   System.Xml.XmlException: The ':' character, hexadecimal value 0x3A, cannot be included in a name. Line 2, position 26.
   at System.Xml.XmlTextReaderImpl.Throw(Exception e)
   at System.Xml.XmlTextReaderImpl.ParseAttributes()
   at System.Xml.XmlTextReaderImpl.ParseElement()
   at System.Xml.XmlTextReaderImpl.ParseDocumentContent()
   at System.Xml.XmlReader.MoveToContent()
   at Xamarin.Android.Tasks.GetAndroidPackageName.RunTask()
   at Microsoft.Android.Build.Tasks.AndroidTask.Execute() in /Users/runner/work/1/s/xamarin-android/external/xamarin-android-tools/src/Microsoft.Android.Build.BaseTasks/AndroidTask.cs:line 25 Calculator2 (net8.0-android)    C:Program FilesdotnetpacksMicrosoft.Android.Sdk.Windows34.0.95toolsXamarin.Android.Common.targets    618 

But when you double-click on this error, it takes you to the first line of the snippet below in Xamarin.Android.Common.targets, where there’s no ‘:’ at all:

  <GetAndroidPackageName
      ManifestFile="$(_AndroidManifestAbs)"
      AssemblyName="$(AssemblyName)"
      ManifestPlaceholders="$(AndroidManifestPlaceholders)"
      PackageName="$(_AndroidPackage)">
    <Output TaskParameter="PackageName" PropertyName="_AndroidPackage" />
  </GetAndroidPackageName>
</Target>

Here’s the top of my XAML:

<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:local="clr-namespace:Adam"
             x:Class="Adam.MainPage"
             BackgroundColor="Black">
    
    <ContentPage.BindingContext>
        <local:AdamViewModel />
    </ContentPage.BindingContext>

Other than that, I’m styling my custom buttons:

   <Style TargetType="{x:Type local:Button2}">

And doing some commanding:

<local:Button2 (blah blah) Command="{Binding ButtonClick}" CommandParameter="A0" />

And that bound function is sitting in my ViewModel class.

Appreciate any thoughts on why Visual Studio 2022 hates me today.