I have a very simple static text title that I've created in both Premeire Pro and in After Effects. Upon exporting the video using multiple formats using Adobe Media Encoder, the text comes out with errors, pixelation, whatever you want to call it. It just doens't come out as it looks in the Premiere Pro timeline. This is my second posting in 2 days. Looks like CS6 was release too soon? Very, very frustrating!
The workaround was to export out as an mov file instead of an mp4 file, then compressing the mov to an mp4 in Sorenson Squeeze.
I haven't seen this behavior on either of my systems.