Build Bombs

My build on my ASP.NET project craps out:


Could not copy temporary files to the output directory.


The file 'bin\ACApp1.dll' cannot be copied to the run directory. The process cannot access the file because it is being used by another process.

The file 'bin\ACApp1.pdb' cannot be copied to the run directory. The process cannot access the file because it is being used by another process.



Don't have anything else running, the help on the first error
talks about a Copy Local Property being set. Damn if I know
where to find that property...



:confused: