Issues when Rotate Canvas is enabled

I have updated my machine to 64 bit. SBP works OK, but after enabling
"Rotate Canvas" option and restarting the program, it loads EXTREMELY
SLOWLY. Takes about 20 minutes for it to come up fully. The tool windows are grayed out. If I click on on the top menu to open a file, the entire SBP program instantly crashes and disappears.

Before I updated to 64 bit, SBP worked fine with Rotate Canvas enabled.

If I delete my SBP preferences file, it opens normally - but without
the rotate canvas function.

If you have any suggestions it would be greatly appreciated. I use
the Rotate Canvas function all the time and it's one of the things I
love about the program.
4 people have
this question