i have the same problem!! when the file is importing after transcoding multiple .mpegindex files are created in the folder \cache\media cache files\mlf.cache.MACC
i have no idea what is going on but these files are all exactly the same and they keep recreating over and over. even if i cancel the transcoding process. they also start appearing when i reopen the project.
anyone know what to do about this. as i doubt adobe do as i have phoned them multiple times before with no luck. i have been promised phone calls to be returned with a solution, again no luck.
cheers, dale wilson.