Did a 6.5 upgrade from Cubase 6 on a Win 7 64 bit O/S. Same problem occurred - crash/error on every exit.
Although the Defaults.xml trick may work for some, it didn’t work in my case.
I uninstalled midi devices, 3rd party software, and everything Steinberg (manually deleted the Steinberg program files as well - the uninstaller didn’t do it).
I reinstalled everything in the following order:
- Cubase 6 and 2 Steinberg VSTs.
- 6.0.5 update.
- 6.5 update.
- then installed a CMC device.
- then installed the 3rd party midi keyboard controller - novation sl mkii.
Crash/error on exit is now resolved. Cubase 6.5 opens, operates and closes squeaky clean now.
It’s possible the 6.5 update installer may have a problem with some 3rd party midi devices. And considering J-Luc’s post, I have a feeling reinstalling the Novation controller/software might have shortcut the long reinstall everything process.