@surffi11 wrote:
I was having also issue for “Not enough space for musicDB” on my Sansa Clip + MP3-player. Reset or formatting did not work with MSC disk management -tool because flash drive was not recognized at all correctly (it was visible, but not formattable).
What did work for me, was using NippurdeLagash’s solution (thanks!) from http://www.anythingbutipod.com/forum/showthread.php?t=68311 :
- Remove external flash card from Sansa Clip player, if you have it
- Remove player from computer / usb cable- Start player with power button and instantly start pressing very rapidly middle button (the biggest button between arrow buttons)
- When you repeat previous step few times, you can get suddenly to main menu, instead of just seeing error message only ( “Not enough space for musicDB”)
- When / if you get into main menu, format the internal memory: navigate to Settings > System settings > Format > Yes (this will remove all your data “permanently” on player!)
- Power off / on the player to see if issue was fixed
Hopefully this could help someone else too!
Thanks for the tip! 
