Originally Posted by
KO80 Is the internal 8 GB of memory that's all filled up - if there is space freed up in there, is that what is needed for some of the processes to be read the installed SD card?
I would try to clear up at least 1gb on phone itself, I have run into problem with my 521 when I get below 1gb, Apps not working, music not showing up correctly. Make sure storage sense is set to store photos, music on sdcard. I would also move some apps to sd card if they can be moved ( I store apps like Microsoft News, Fedora, and games on sdcard). To move apps storage sense->apps->select app and if you can move to sdcard it will be option. Clear temp internet files has well. Try that stuff and report back.