/Summon Cannon, I've Got a Problem

[Barrier]

As I was flying on one of my trade-routes, my game suddenly quit. No error messages, no updates, etc, just quit. I try to log back into my account and it says "This account is already in use on this server". So I decide to restart my computer and log back into my account. This time there is no "This account is already in use on this server" message, but after about 8 sec the game quits in the same way as before.

Anyone knows what the problem might be?

EDIT: Some things to consider:
Re-installing didn't help
It seems to only quit in space
Only happened to Ilya_N_S so far
It seems to stop after I payed back a loan (my balance now is 5mil), although I think it will happen again

Don't know if that is useful or not...