I have been looking at TFS 2010 Lab Manager recently. One problem I had was that using the sample code from the Lab Manager Blog Walkthru the building of the CALC ASP.NET web site failed on the build server, I got an error

ASPNETCOMPILER: error 1003 The directory ‘c:build1LabWalkthruCalculator –BuildCalc’ does not exist.

and the build service was right it didn’t exist; it should have been ‘c:build1LabWalkthruCalculator –BuildSourceCalc’.

This was due to a problem detailed here. The Solution file had the wrong path in the Debug.AspNetCompiler.PhysicalPath property. It was set to “..Calc” when it should have been “.Calc”. Once this was altered the build could find the files.