In all honesty, I have no idea. I've been playing around with the different settings (multithreading, null frames, a little with the colorspaces) and I've yet to be able to reproduce the problem. The only thing that I can suggest as a quick solution is the obvious, roll back to a previous version that worked. Only thing else I can think of is maybe you didn't uninstall the old version before you installed 1.3.12.
|