Error Code 1006

Whenever i do a mixdown I get an error code at the end:
Internal Error
Error Code 1006.
However the mixdown succeeds.

Also Cubase is crashing regularly. And recordings often just stop without notice.
All updates are installed.
What can be the reason?

You resolve this?

I get this in C8 now…and it won’t upload to Soundcloud. But yes, the mixdown completes as well.