Right, the game crashes every time I host a match upon entering a lobby, I reckon it's something to do with generating the planets whilst IN the lobby. But that's just from my perspective. Doesn't crash when other people are hosting, nor when i'm charging through the campaign. Also crashes using stand-alone version. No mods are installed. (at least, none of my knowing) Any ideas?
Did that and it still came up with a crash. But I decided to see what would happen if I moved it to my other Hard Drive. Clean install on the other Hard Drive seems to have done the trick. dunno why it doesn't like the other one though... But it works.
According to the Drive Monitor Software I use (Acronis), everything's good. So maybe another impossible quirk of a 7 year old desktop? Ah well, I'll just leave it, as it seems to have done the trick. Thanks for all your help!