If I try to build my Visual Studio C# .NET CF project, the following line is added to my AssemblyInfo.cs file by FinalBuilder:
[assembly: AssemblyFileVersion ("1.0.0.0")]
But the .NET compact framework doesn't support the AssemblyFileVersion attribute, so my project doesn't compile with FinalBuilder (without FinalBuilder it compiles okay).
The action doesn’t know that it is a cf project, as a work around, turn off updating the assembly info from a the VS action and use the Assembly Info updater action before the VS action.