I had to search for a forum post to find the upgrade docs. Their should be a readme in the zip file (at a minimum) and it should be covered in the PDF doc. I also think that since this is a commercial plugin, the doc should be included in the "unzip me 1st" file.

Also, I was not able to just reinstall all of the plugins. I had to uninstall and reinstall planimage, folder access, and tabsfieldprotect to get it to work.