DVD Menu Issues All of A Sudden On HD200

[Savage1701]

All of a sudden I am having issues with my ripped DVD's not calling up the menus correctly. For instance, the menu will appear, but no little tick that I can arrow up and down to choose "start movie" or "chapter selection", just the background for the menu. Hitting "Play" does no good either.

Or, I choose "Play Movie" and it goes to the end of the movie or to the disc specials.

If I play these movies on a client, it can happen also, but it's less irritating there because I can mouse over the chapter or whatever and then it plays fine. I can't do that with an extender though, which is what drives our main TV.

This is recent. These movies play fine on software players on other machines (WinDVD, Cyberlink, WMP). They have also played fine in the past.

Is it possible the HD200 is "remembering" an error? Can I clear it's cache file anywhere? If so, where would that reside?

Any info is appreciated.

Thanks.