UPDATE
Copied all Mame folder to mGalaxy folder, (only 2GB). Deleted "xmlout.xml", ran Mame. Exit. Ran mGalaxy and it worked, but I don't have any Snap files showing. They are in the folder, so time to go through the Forum and see what is sid bout that problem. Thanks for the help.
EDIT: so thats the snaps sorted now, all needed files taken from zip package and placed seperately in folder