I got this error when hot syncing my Treo 600 today

"-- Date Book
- Some PC records were not copied to the handheld. Your handheld may be full. To correct this situation, delete some records and perform a HotSync operation again.
Desktop = 4815, Handheld = 4813"

Now I can't see any records on my calendar on either my palm desktop for my treo600. I'm in panic attack mode because I have YEARS of calendar appointments on this thing.

If I go tot he info memory thing on the treo, it says over 4000 records, but in the calendar app, I can't see a thing.

Anyone know what this is? And how to fix it?