I just loaded the new Linux Viewer and I noticed one of my clients had an entry duplicated in all of my address folders. This is not something I did. When I tried to delete the duplicate entry out of one of the folders it was copied to RU Viewer crashed. Upon re-opening RU that client was deleted out of every folder, including the folder it belonged in. I restored the client from a backup I made and it hasn't glitched again so far. I created a Test Folder and a Test Client and that didn't create any crash or glitch that I can see. It is a good idea to create a backup of your address book before launching the new viewer just in case there is a glitch. I don't think the Linux Viewer has automatic backups like the Windows version does.
UPDATE: Ok it changed again since my last update. Now the download page button links are correct and there is now a .deb package available as well as the .tar.gz version. A nice touch for the .deb users. Thank you RU!
I just went to https://www.remoteutilities.com/download/linux.php which still had the expired version available. As an experiment I cleared all my browsing history, cache, cookies, etc (Firefox 87.0) and now Version 1.0.8.q Beta 8, April 1, 2021 Free license (expires June 1, 2021). Is available. This may help others who are unable to see the new download link.