I left the program running as well with no issues. I went ahead and downloaded/installed K-lite's codec pack and sure enough I was able to run AVS with no issues (so far). I then realized that since I purchased my new PC, I never installed any video/audio codecs. I tried simple video conversion with another program and it told me I was missing an audio codec (specifically, the AC-3 Dolby Digital Audio Codec). I'm working with all this on my new PC a few weeks old, where as before I was working off my laptop. I just saw your reply now - but I believe I figured out the problem for anyone that might have the issue in the future. I don't believe this should produce any issues as I've rendered videos previously via this method. PC specs: Windows 7 Home Premium 64-bit ed on: Intel i5-2500k 4.0ghz Asus P8P67 Pro Motherboard CoolerMaster Hyper212+ Heatsink - CPU 37C Idle, 57C Load 8gb G.Skill Ripjaws X DDR3-1600 RAM MSI Geforce GTX 570 OC Fermi 1.2 gb 4.2 Ghz 1x Crucial RealSSD 64gb SSD 1x Caviar Black 1tb HDD Corsair HX 850w PSU note: when I install AVS Video Editor - I've installed it to my HDD as I'm trying to keep my SSD clear of any non-OS programs. I uninstalled/cleared my registry files/restarted/re-installed AGAIN and I still get the error messages. I cleared all my registry files/folders as well and did the update to 6.0 last night as it is the most recent version. I tried uninstalling the program (was using 5.0 or whatever the lastest version was before 6.0). Only way to close the program is to end task via task manager.

Also I should mention the error repeats itself, endlessly it seems as about 1000 error messages pop up, all saying 'External Exception EEFFACE'. I can't seem to pinpoint a trigger setting off the error. This happens at random - sometimes after a few minutes sometimes after 15-20 minutes.

After working in AVS Video Editor for a while, i get the error message: 'External Exception EEFFACE'. Hi there I've been using AVS now for about 4 months or so with no issues until yesterday.

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