**** CORRUPTED WORKFILE - CANNOT CONTINUE
**** BASE WORK FILE="C:\GAMSIDE\225E\GAMSWRK1.SCR"
**** TERMINATED DUE TO A FILE OPEN ERROR IN WRKFILEVER
**** PLEASE REPORT TO THE GAMS ADMINISTRATOR

This is usually the result of an error creating the scratch files GAMS uses for some communication. How full is your disk? Note that the scratch files are deleted when GAMS stops, so it could have become full, gotten the error, and deleted files to create space. To stop the deletion, try running (on the command line): gamskeep foo instead of gams foo.

This will keep the files in the scratch directory 225? and you can see if the disk is really full, etc.