When implementing a design on a Samba shared network drive, I get a warning message similar to the following:
rm: WARNING: Circular directory structure.
This almost certainly means that you have a corrupted file system.
NOTIFY YOUR SYSTEM MANAGER.
The following directory is part of the cycle:
This problem has been seen with XPS running on Windows Vista. The only known work around is to download Cygwin's rm.exe version 6.10 and replace the rm.exe found in directory C:\Xilinx\10.1\EDK\cygwin\bin.