rilaardo and terminator, first of all, i suggest you to format your player rather than defragment it.
http://www.mympxplayer.org/how-to-re...ck-vt2400.html
masakupa, please format your player, then try converting using 3.68 and 3.57, avoid using versions above 4 as they are meant for players with big screen
if the problem persists then try defragmenting but i think the problem should be solved after formatting.