I know for a fact that earlier versions of GOM's player, played my video ISO's just fine, but now it doesn't and I'm know their not corrupted. That leaves but one other supposed possibility; ie; codec(s) that GOM's player used to have are no longer provided. And yes, I've tried pointing the player's codec update feature to search for 'the' codec, but it fails to find 'one'. Anyone else finding this and if so, any info on this and/or resolution? FYI - Seen on both XPH-SP3 and Windows7 machines. Additionally, I'm able to use SUPER's converter to create mpg's for the ISO's so I know their not corrupted, so it seems either malware, microsoft or GOM's preventing this now, but which one?