Hi,
I've got the same problem on my PC with Gimp 2.7.3. When it is loading I get confirmation to sandbox or not all of the .exe for Gimp modules. Even I check the "remember" box, I get the same question at next start.
Auto Sandbox does not seem to work, at least with Gimp...
Finally I deactivate sandoxing into Avast, too much trouble.
I am using Avast 6.0.1289.
Since this conversation started in February, the problem could be solved in November...
Do you have any idea ?
Regards
Stephane