I keep having a reoccurring problem with my timeline playback. After about 30 seconds or so of playback, the cursor returns to the point it started and the picture freezes, but the audio continues unhindered. I've tried numerous things. The most successful of these was uninstalling Quicktime, which improved the situation greatly, but not completely. Obviously I need Quicktime, but on installing it again the problem has reoccurred. Any help much appreciated.
Thanks
Rob
