I had a USB key that functioned properly in both PCs and MACs.
As I was using it on a mac (at school), while working on a Flash file that was on it (saving regularly, etc.), someone pulled the key out of the MAC abruptly without me properly ejecting it first. From then on, I couldn't use it anymore. The computers wouldn't recognize it. I managed to access the data on it ONCE and managed to save a few vital files I needed but after that I don't seem to be able to use it anymore and there's still lots of stuff on it I absolutely need to save.
When I plug it on a PC, I get the message:
One of the USB devices attached to this computer has malfunctioned, and Windows does not recognize it. For assistance in solving this problem, click this message.
Any help on how to recover the data on it?