Mac OSX 10.9.4 should address the issue where pink/green lines appear on export when using the new Mac Pros.
So we can turn on the GPU acceleration ? I'm afraid to do anything because I am at a point where I can actually work on my machine. I did the 9.4 upgrade but haven't really noticed a difference-but it is running, fingers crossed.
Please let us know if the problem described still happens with 10.9.4.
The specific issue where corrupt exports result when GPU acceleration is enabled in the new Mac Pros should be addressed.
i had all the known problems with new mac pro and os 10.9.3
(lines in preview and export, flickering while scrubbing, crashing-freezing),
all fixed, at least for me, with the new version of 10.9.4