Comment 1 for bug 534674

I'm able to reproduce this crash aswell. As mentioned by OP, search for some object and zoom at it, then close stellarium.
I've attached stellarium to the debugger to see the call stack and this is what it shows:
> QtCore4.dll!6a2555d8()
  [Frames below may be incorrect and/or missing, no symbols loaded for QtCore4.dll]
  msvcrt.dll!77bfc774()
  QtCore4.dll!6a2dca89()
  msvcrt.dll!77bfc2e3()
  QtCore4.dll!6a213a7b()
  QtCore4.dll!6a215138()
  libstelMain.dll!6729d5a7()
  msvcrt.dll!77c10e66()
  libstelMain.dll!6729d645()

The crash happens at the same addres as OP's:
6A2555D8 8B 40 50 mov eax,dword ptr [eax+50h]
eax is 0, so it's trying to read an invalid memory address.