The log reads:
**** **** Open write error RC=22 FN="C:\Documents and Settings\x\My Documents\ gamsdir\225a\gamsstat.scr" ****Invalid argument **** **** TERMINATED DUE TO A FILE OPEN ERROR IN SysOpenText **** PLEASE REPORT TO THE GAMS ADMINISTRATOR **** **** GAMS Rev 145 Apr 21, 2006 WIN.00.NA 22.2 145.000.041.VIS P3PC "
Most likely the error has been triggered by a virus scanner. By default GAMS does quite a few file operations during its runs and we have seen problems aggressive virus scanners, which do not allow to access
.scr files. There are a few things you can do:
scrfor scratch files: Starting with distribution 22.9 the default file extension of intermediate files located in the
.dat. The scratch extension is a parameter that can be changed with the GAMS option
gams trnsport scrext=tmp. Within GAMS code you get the scratch extension using
<modelname>.solvelink=5;before the solve statement and by using cplexd (or any other in-core solver version) instead of cplex as your lp solver (just add the line option
lp=cplexdto your model). Please note that this increases the amount of RAM required by your model and that not all solvers are supporting in core operation.