This sounds very much like a hacked memory player. See this topic about how to remove the hack:
http://mympxplayer.org/how-to-removi...ck-vt2400.html
Simply put, a "hacked" memory, is taking a player with one size memory, and formatting it in an invalid way, so that the player appears to be larger than it actually is, and then selling the player as though it is this larger size. It is a fraud that is being perpetuated on eBay A LOT. Your "format errors" is a symptom that pretty much tells you that the memory is not properly being represented.
H.