If you get an error “This document has not been encrypted using stand security handler and therefore could not be opened” while trying to open a DRM encoded eBook in Adobe Reader for Palm OS on your Palm device, here’s what you need to do:

1) Activate your Palm device from your desktop Adobe Reader 7 by going to File –> Digital Editions –> Authorize devices.

2) Go to File –>Digital Editions –> My Digital Editions. Click on the book you need to send to your Palm device (add it if it doesn’t show there by the “Add File” button), and click ‘Send to Mobile Device’.

3) Now your eBook is prepared and sent to your List of files to be transferred in Hotsync manager