To pass all unit tests on Windows, "F# Tools for Visual Studio Express 2012 for Web" must be installed.

[yukitos]

I couldn't find any notes about this requirement, but is it intended?

When I uninstall "F# Tools for Visual Studio Express 2012 for Web",
I've got the following errors when running "build.cmd RunTests" command:

***** FSharp.Compiler.Service.Tests.FscTests.2. Simple FSC library test
args: [|"fsc.exe"; "--target:library"; "--debug:pdbonly";
"--pdb:C:\Users\yukitos\AppData\Local\Temp\2\Foo.pdb";
"--out:C:\Users\yukitos\AppData\Local\Temp\2\Foo.dll";
"C:\Users\yukitos\AppData\Local\Temp\2\Foo.fs"|]
error: unknown (0,0)-(0,80) parse error File 'C:\work\github\FSharp.Compiler.Service\bin\FSharp.Core.optdata' not found alongside FSharp.Core
error: unknown (0,0)-(0,80) parse error Error opening binary file 'C:\work\github\FSharp.Compiler.Service\bin\FSharp.Core.dll': File 'C:\work\github\FSharp.Compiler.Service\bin\FSharp.Core.optdata' not found alongside FSharp.Core
error: unknown (0,0)-(0,80) parse error Problem reading assembly 'FSharp.Core, Version=4.3.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a': Error opening binary file 'C:\work\github\FSharp.Compiler.Service\bin\FSharp.Core.dll': File 'C:\work\github\FSharp.Compiler.Service\bin\FSharp.Core.optdata' not found alongside FSharp.Core

These errors have also been occurred during "3. Simple FSC executable test".

Please let me clarify requirements.
Thanks and regards,

[quasilord]

Thanks, the root cause is this issue: #156. The tests have been patched for now.

[yukitos]

Thanks!