With version 5.1 I am trying to make a series of AVI s from pte projects. One or two have worked well, some cause a system crash during the process, and some finish the process but the sound is displaced, broken up, or not there at all. I have found that using the pte video codec I get no video at all, only sound; the codec that works best is PICvideo mjpeg. If I break the projects up from about 150 slides each to a series of 10 then this is better; there are animations on most slides. I have removed and reinstalled pte, even downloaded a fresh copy, all to no avail. Any ideas as to what is going wrong.