I just had a "Critical Update" today 8/28 around 2:30 PM. As a result, I cannot play movies on my laptop anymore. Using an LG external drive. Never had a problem before. Message Says " Unexpected error occurred on your PC. PC needs to restart. This happened twice while watching a Stars Wars DVD. I ran Scannow with no negative results. Just for fun, ran Defender and MAM. No problems. Any ideas?? I'm just about ready to do a restore. But the update would probably download and install again.