Im trying to figure out whats going on, ive been working on a music video for the last 2 months and i've rendered this file numerous times with no problems. Recently after a few edits my optical flares shows up as pink lines after I render everything. Anything that would cause this? I have attached a picture for reference.
Do you have it set to GPU rendering? Try turning that switch to whatever option it's not on.
What, exact, version of CS6 are you running? Is it 11.0.4?
Your screenshot is interesting but doesn't show us anything at all about what's going on in your composition. I would first, flush cash, second, reboot, third, show us a screenshot of the entire project with the properties revealed for your problematic later.
What do you mean by optical flares? Are these optical flares caused by deliberately shooting into point source lights? Or are they native Adobe effects? Or third party filters?