Quoting Orodum,
reply 3
had the old version and then got the 1.1 update and i got the same problem
I'm having the same problem. Sins 1.1 works fine, but d/l galaxy forge and it isn't working. It keeps giving me an error, "Galaxy Forge has encountered and error and needs to close."
Ok, I loaded it on my laptop and it seems to work fine. Why it wouldn't work on my desktop, I don't know. I can play SINS on both of them.