Ok, I figured out what happened. I said that I was using version 7.1.1 when in reality I had upgraded to version 7.2.1 in August. My mistake!
So when I tried to fix my problem, I uploaded a version of the file from 7.1.1 which ended up with the PMs blank. Rick then evidently looked at the script and it wasn't the correct 7.1.1 version that I said I was using, so he assumed the file had been modified and uploaded the stock 7.1.1 version. The PMs then worked. However, the new features of 7.2.1 were now absent.
When I realized my mistake today I uploaded version 7.2.1 of both of those files and all is well: the PMs work and the 7.2.1 features are in place once again, to the happiness of our forum users.
Thanks again for your help.
