I have (three times infact) ripped a DVD onto my machine and encoded it using AutoGK (no errors there), I can play the file in Video Lan with no problems, but if i try to play it in Windows Media Player it just closes media player, all my other DVD rips (165 infact) play without error.
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GSPOT info
Warning: DirectShow crashed while attempting to render this file.
This is usually due to damaged, misconfigured, conflicting, or poorly written codec drivers. It is possible, perhaps even likely, that other media players will crash when they attempt to play this file as well, as most of them will also use DirectShow. GSpot was able to intercept the crash, and has attempted to identify the codec or filter involved; uninstalling or reinstalling this codec or filter may solve the problem.
Try renaming it 'mpeg2dmx.ax.old' or moving it to another location or unregistering it to see if it helps:
Click Start => Run
regsvr32 /u C:\Windows\system32\mpeg2dmx.ax