choise.cs missing

I've ran the java compiler to build all of the includes using the syntax in the README.txt for the cssharp project. The only place I see mention of choise.cs is within the csproj file as an include. If I remove the line I get different build errors. I'm using the OpenADK-NET-US.sln, any suggestions?

WITH CHOISE.CS AS AN INCLUDE (ERROR ONLY)
error CS1504: Source file 'D:\Downloads\open-adk-csharp\trunk\open-adk-csharp\src\us\sdo\Assessment\Choise.cs' could not be opened ('Unspecified error ')

WITHOUT CHOISE.CS AS AN INCLUDE (ERRORS ONLY)
D:\Downloads\open-adk-csharp\trunk\open-adk-csharp\src\us\sdo\Assessment\ItemCharacteristics.cs(231,31): error CS0246: The type or namespace name 'Measurement' could not be found (are you missing a using directive or an assembly reference?)
D:\Downloads\open-adk-csharp\trunk\open-adk-csharp\src\us\sdo\Assessment\ItemCharacteristics.cs(246,9): error CS0246: The type or namespace name 'Measurements' could not be found (are you missing a using directive or an assembly reference?)