electronic monk

my sj33 seems to be unable to read my lexar memory card,more like it cant read one side of it as it comes with two 128mb sides with which u choose with a flick of a switch on the card which side you want to use.The clie can read one side perfectly but when the clie attempts to read the other side it gives me the following error message

"The Startup Application for this card cannot be run"

and subsequently on tapping 'OK' my clie crashes requiring a soft reset.
i really am at a loss as to what to do.i was wondering whether during one of my data transfers i accidently deleted a file on that side of the memory stick that my clie requires to read it and am wondering what a possible solution could be.

Pleass could any Guru and Guru wannabe's help this Lost guru,merci.