File Copy Failure

[draymond]

7/2/2007 9:44:34 AM: --------------------Starting Build: 'ProductName.bld'--------------------
7/2/2007 9:44:34 AM: Building project step 'Move Test.dll file to Installer'...
\\Server\Directory\ -> C:\Build Area\
Copying: Test.dll
1 file(s) copied
Error: One or both files not moved.
7/2/2007 9:44:34 AM: Step ''Move Test.dll file to Installer' failed
7/2/2007 9:44:34 AM: Build successfully completed.

The file is successfully copied to the local machine but the output reports it as an failure. Under what conditions should this happen?

Windows XP Pro
VBP 6.1