I feel your pain.
This happened to me once, after I had installed Preware. I was changing my kernel from Uber back to stock. Shocked to see all my apps were gone after a manual reboot.
Ended up redownloading all the apps from the catalogue. All the paid ones reinstalled fine without having to purchase again.
Maybe there was a faster way but this was in the early days of my TP ownership.
I didn't get upset with HP, more with myself as figured this was something with Preware. It does warn you to be prepared to accept your TP may need to be restored or doctored on the occasion something goes horribly wrong.
Glad to report that this was the only time it happened, hasn't reoccured since.
Just my 2c :-)
-- Sent from my Palm Pre3 using Forums