shonen45

I have a NW-E002F, firmware version 1.00. Recently some newly transferred MP3 are not playable with the "FILE ERROR" message displayed. But this only happens when in SEARCH mode, that is if I search for a particular singer, and start playing the songs from there. This not only affects the newly transferred MP3, but also other MP3 that used to be alright. If it in the default MUSIC screen (no playlist), all the songs are played without problem. Is this a documented issue? Would the new firmware solve this? Thanks in advance for your helps!