I am trying to figure this out. I have a project in CS5 with a simple choker and on one mac machine the choker repeats the frame's edge pixels but on another running the same software and OS the choker does not repeat edges. I tried to make a new project, the same edge problem occurs. I deleted the AE prefs, and even copied the same plug in from the machine with the proper edge repeating mac. I updated my AE version as well. Anyone seen edge repeat problems before?