I/O error when running Palm application

Hi!
I am receiving an "I/O error" message when I am trying to run the Palm application and after that, the application quits.
I use an old eMac and Operating System is X10.2.8.
Then I've rebooted it, as well as downloading and running the latest Palm application – but bad luck.
Can anyone help me by providing solutions?
Thanks in advance.
