I'm also having major problems since 6.2....I can no longer even start the game...it crashing during loading. I've tried every fix I can find, and my system either meets or exceeds every game requirement (mostly exceeds...we're talking a crossfire environment 32 gigs ram, 3.5 tb hdd capacity etc. etc. etc.)
It was fun while it lasted, but i'm really getting frustrated.
And now I've got a friend (who I seriously hope is mistaken) telling me I was stupid to buy the beta because i'll have to buy the game all over again in a few days. I've only had e few weeks with the beta...with a lot of down time due to crashes.
I hope he's wrong...I'm completely disabled, on a very small fixed income and I rely heavily on GalCiv 1, 2 and (hopefully 3) to give me some time away from my pain (figuratively) for a few hours at a time.
Hope I get to go back to playing, soon. The time it has worked, it's been awesome and a 'quantum leap' beyond 2.