supercard -sd not reading cards

I have been using the card without problems, until now.
The problem started happening after i used a m3i0 and touchpod, and selected to boot the slot2 device, which was my supercard.
Now when i power on my ds with the supercard, i get the error 'not find the SD Please power off the GBA'
I have tried differnt sd cards, all give the same error.
If i boot without a SD in the supercard, it says 'write protect lock, Please turn off the GBA'

Can anyone offer any help, please?