Thank you for your reply. From having searched the forums for similar issues, I believe this issue has to do with the age of the campaigns in question. <a href="https://app.roll20.net/forum/post/7043953/upgrade-in-progress-forever/?pageforid=7044146#post-7044146" rel="nofollow">https://app.roll20.net/forum/post/7043953/upgrade-in-progress-forever/?pageforid=7044146#post-7044146</a> <a href="https://app.roll20.net/forum/post/7464854/update-in-progress-bug" rel="nofollow">https://app.roll20.net/forum/post/7464854/update-in-progress-bug</a> The issue only occurs with two campaigns from 2013, and none of my other campaigns. The two campaigns are: <a href="https://app.roll20.net/campaigns/details/32863/the-final-casualties-of-66" rel="nofollow">https://app.roll20.net/campaigns/details/32863/the-final-casualties-of-66</a> <a href="https://app.roll20.net/campaigns/details/24253/mondays-with-cthulhu" rel="nofollow">https://app.roll20.net/campaigns/details/24253/mondays-with-cthulhu</a> ' Here are some additional repro steps Step by step instructions on how to reproduce the issue 1. Log into Roll20.net (firefox, or Chrome 2. Under "Recent Games" on the home page, click "View all games" 3. Click "Launch Game" on either game listed above. 4. Alternatively, Click the game's title, click "Launch Game" from the following page (pages linked above) 5. URL for both games turns to: " <a href="https://app.roll20.net/editor/" rel="nofollow">https://app.roll20.net/editor/</a> " and the following message is displayed. Message persists regardless of time page is left open. Upgrade In Progress We're doing a little spring cleaning to optimize your game. Please wait... Please do not press the back button or close this window Computer Settings: Web Browser: Chrome / Firefox 6 Browser Version: 78.0.3902.108 / N/A Operating System: Windows 7 (64-bit) If Javascript is enabled - Yes Your anti-virus software - Avira, AdBlock (Have additionally tried on a chrome book and received the same error) List of any browser add-ons or extensions enabled: antivirus from above, no add-ons in firefox A Console Log from the moment you logged into the page through when you encountered the issue. Uncaught ReferenceError: $ is not defined at (index):18