klamal

The current FSGenesis is not the same guy(company) that it used to be.  He is now creating mesh again under the Toposim company name(http://www.toposim.net/).  I believe the current FSGenesis bought him out?  So, if you liked what the original creator did, than you'd want to go with toposim.  I have not used the new FSGenesis stuff but have heard the same problem you are experiencing with customer support.  The original owner(and now the toposim owner) had great support from my experience.
 
Hope that makes sense and hope it helps.  If it were my choice today, I'd go with toposim.  But that's just my opinion.

I don't think this will help but will throw it out there anyway just in case. Did you see the YouTube video about the stuttering when zoomed out too far and obstacles are on? The guy in that video ended up renaming the obstacles (.dat?) file and creating an empty one and that solved his problems. Maybe your zoom level is far enough out on startup that it's trying to read too much and crashing? Just complete and total shot in the dark and probably won't help like I said but what else do you have to lose?