Thanks for the reply. I think
TwinMos is pretty big in the memory business. Tried with the button but it didn't do anything (well it didn't show anything on the screen until i unpressed the button). Going to try a low level format. And yes I'm only going to try it using fat 32.
After erasing the partition and low-level formatting it and formatting it with fat 32 still no success. Well I got the powerpak screen to say "Card B" instead of "Powerpak"..
I guess I just have to save up some money and take my chances on another card.