I had issues with being stuck on PG3 v3.1.23_1. After many attempts with [Upgrade Packages] and rebooting several times, I did some reading around the forums and finally realized I had not done the PG3 to PG3x upgrade.
I found the Upgrade to PG3x process in the UDI Wiki. Followed the steps and after two tries, cleared Java and browser caches, etc. I finally got my Polisy updated to PG3x.
One final try to upgrade to PG3x v3.2.2 with clicking the [Upgrade Packages] and rebooting it worked.