The current version of the GAMS IDE uses the “My Documents” directory to store an initialization file (
gamside.ini) . It will not run if this directory can not be accessed.
Usually this directory is on the local c:-drive, but some system administrators may choose to have this directory on a network drive (in your case the h:\- drive, but this is just a guess). Thus the GAMS IDE will not start if your machine is not connected to the network, even if GAMS itself is installed on the local c: drive.
The workaround is to create a shortcut on the desktop with target:
"C:\Program Files\GAMS22.8\gamside.exe" c:\projects\gams\gamside.ini
When you click on this shortcut the GAMS IDE will use the
c:\projects\gams directory to store the initialization file. Make sure
this directory exist!
The IDE Help has some notes on this too (click on the file
gamside.chm in the GAMS system directory).