I don’t know if this is a contributing factor, but I JUST started experiencing this this week on a new project. The one thing that was different than any previous project is that our (agency) client supplied stills to us, and they were in CYMK and my off-line editor was unaware and dropped some into the timeline. Now I haven’t scrubbed the project since I started on-line’ing it (due to tight delivery), but there still may be some peppered throughout the timeline. Anything I’ve been adding into Premiere Pro or After Effects has been scrubbed thru Photoshop and changed to RGB & 72dpi. My issues only seem to start when I open the Project in Premiere Pro. I’ve been working on another project in After Effects all morning with zero issues.
Don’t know if it helps, but I thought I’d toss it out here.
-Chris
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iMac(27″, Late 2012), 32Gb RAM, OSX 10.10.2, NVIDIA GTX 680MX, CUDA 6.5.45