Save Settings not working

[yojoe]

I use GS with Xampp and windows without a problem.

It's always a matter of taste, but tbh. I lost too much time finding dependencies between different libs, OS specific settings etc. And when things turned out that under win OS some of php functions aren't prepared to work on windows, I had enough of fighting with everything else (especially changing code I already had), instead of just doing things in a simple way.
At the end everything would be moved to a linux based production server, so where was the sense anyway ?

And that's why I switched from WAMP to a LAMP stack.
I was thinking about preparing a small VM image with apache, php, and preinstalled GS long time ago, but it doesn't take much time to use one of already existing VM's:
http://bitnami.org/stack/lampstack
http://www.turnkeylinux.org/lampstack
There are more of such projects, so feel free to search for "lamp stack".