48SX and Solve Equation Library "Invalid Data"

[kdbeyer]

I have had the HP Solve Equation Library in my 48SX for a long time. One day recently when I turned the calculator on, I got the Warning "Invalid Card Data". Is there any way to fix this or determine if the card is bad or the ports? I've tried switching the port it is in, but I get the same message, which seems to point to the card, but why might the card go bad? I've also pulled the batteries out of the calc and let it sit for about a week, but I still get the invalid card warning.

Thanks!