Hi Scar,
The symptoms you mentioned indicate that you have a HACKED player. This is where the player has been hacked to show more memory than that is physically installed installed in the player. By putting the hack on, it makes your computer show up as having a lot more storage, but when you try to copy or use that fake/hacked part of the memory you get errors.
Follow the instructions in this post here and hopefully that will remove the memory hack and also get rid of those errors as well -->
How To: Removing Memory Hack.
Let us know of the result.