X51v File System seems corrupted

It started with Zagats. I couldn't tranfer files to the memory 60X SD
by CDW (Computer Discount Warehouse). Message is:*unable to transfer
Connecticut... Guide. Check your media card and try again.

Then with File Explorer I tried to move some of the guides to the SD
and I get a corrupted file message. Meanwhile, all these files work
in the Zagats program.

When I click OK, after the corrupted file message, the ppc sends me to
Mobipocket. When I click and hold on "Welcome to Mobipocket" and then
click on move, I get:

Error while moving the ebook file. Check the memory space left of if
file alreaady exists at the target location. The target location is
empty, as I formatted the SD.

According to settings memory:

Stoage Program
-------- ----------- Total
195.12 Total 49.40
in use 55.97 in-use 26.05
Free 139.15 Free 23.35 After
I shut off all programs 27.01

Storage Card 952.19
in-use 0.02 MB Free: 952.17
There is one directory on the SD called ebooks

What am I missing here? Why are the Zagat files showing as corrupted
and why can't I transfer them to the SD

Alan
.