There is one folder on my device (not in the microSD card) with mp3 files that used to work perfectly but suddenly started to cause a malfunction when I try to open it on a PC. It is said to have no files in it and all of the other folders stop being recognized after this until I reconnect the device. However I can always get access to the folder content through the cellphone file manager system: the problem is only happening when connected to a PC via USB cable.
Does anybody know why is this happening and how can I fix it?
Device: Samsung Galaxy SII.