Mythgame issues

[fromans4]

I have been working on Mythgame now for a couple of days and I have gotten most of it working well. I have a couple of issues that I have not been able to fix.

1. Some of the ROM's I have downloaded don't appear in the list of games. I have tried re-scanning, re-booting, getting a replacement ROM from another source and they just don't show up on the list of games in MythTV. Has anyone else ran into this? If so, is there a fix?

2. I have populated the "snap" directory and converted all the "pngs" to "gifs", but I don't see anything when I select the games. I get a description and the game works but the preview image never shows up.

Thanks in advance for any help,
Brent