Compiling Source - VS2003

Hello all,
I'm having trouble tracking down a problem with building the source code. "lscript_compile_fb" project fails with a "The system cannot find the path specified" error. I looked into the .l and .y files for invalid paths, and also checked the .vproj file to make sure all paths are in quotes....nothing. Any ideas on what could be causing this error?

Thanks

Make sure cygwin is installed at "C:\cygwin" and flex & bison are in "C:\cygwin\bin\".

It doesn't like spaces in the path, even with quotes.

-peekay