CCS "Error #6001 cannot open file"

CCS tells me an "Error (1 item)     #6001 cannot open file", but it does say which file it cannot open.  ???

Instead it points me to a file called "\Debug\ccsObjs.opt".  That file contains a list of all the .obj files used in my project (which are all easily locatable and open-able within my project directory), but CCS doesn't tell me which file it cannot open.  (It just sits there, with a blank look on its face, telling me it cannot open a file...)

How to solve?

Thanks for your help.

-- Walter Snafu

CCS version 6.0.1.00040