An error was encounter on your SD card MIUIV5 3.5.3 HTC Desire S

Aug 18, 2012
The above error is displayed when I open Music player. Even the gallery does not show anything. Although, my SD card is all right since all other file explorers can open it fine! Without this a lot of functionality is disabled eg: I cannot upload a pic from Twitter! It says not possible from your device! :( Poweramp works (a little buggy though)
I remember Music was fine until I flashed GAPPS. Any idea?