Salling posted a fix for the Palm client for Salling Clicker 2.2 this afternoon, which makes it operational on the unlocked GSM 650. Just tested it out and it seems to work great. No details yet on the reason for the issue with the unlocked model specifically, but once he got ahold of one it took a matter of hours (literally) to find the fix.

You'll need to go into the support forums on the Salling site to find the patched Palm client. I assume he'll eventually roll this into a point release of the 2.2 version.