Does your version of BSplayer is 1.35.823?
If the answer is YES, then
update BSplayer to the new version 1.36.825!
I think you are using that version since the error on close is related to that version only (if it happens with other versions it's sporadic, with v1.35.823 seems to happen almost every time).
BTW I never had that kind of problem, I only posted it in my post in the BUGS section since many users have been damaged by this problem
