This most likely is a settings mismatch between your comp and your render output and it throws off the temporal effects. You will have to be more specific and provide the exact settings for the comp and output.
Oh alright, erm the composition settings are: 1280 x 720, 30 FPS, Lock Aspect ratio to 16:9 (1.78), Pixel Aspect Ratio: Squares Pixels, Frame rate is 60, Resolution is Full 3.5MB per 8BPC frame.
The output is: Quality is Best, Resolution is Full, size is 1280 x 720, frame rate is 30 FPS, and format in the output module is H.264 with a bitrate of 6.00 mbps.
Also I've just tried removing my adjustment layer which consists of the reelsmart motion blur and magic bullet it looks, it seems to be rendering just fine. So could it possibly be one of those effect? I'm really not sure because I always use those and it always has rendered just fine! Thanks so much for replying though man. I hope you can find a fix.
You're trying to render to an interframe codec with a very tiny amount of RAM. Try rendering to an intermediate codec (such as QuickTime with the PNG codec) and then take that into the Adobe Media Encoder to make your final deliverable. This is my workflow anyway even though my system has a lot more RAM. AE can't render a two-pass h.264, but the Adobe Media Encoder can, so I prefer AME to AE anyway.