Just to chime in: I get the M506 error no matter what memory card I use. But if I do a hard reset then the music store works.
However, as soon as I install my usual batch of applications, the music store stops working and I get M506. I haven't figured out what the deal is.
Rather then play musical chairs trying to figure out which app is causing the problem, I just stopped using the music store. Admittedly, not an ideal solution but I gather that the music store application just isn't very stable and it's the least useful of all the apps I install on my device.
Hopefully they (whoever "they" are) bother to fix what should be a simple problem to fix.
|