Black Screen after update to 8.20.4.15

[TSPlusSMD]

I upgraded to 8.20.4.15 and it interjected problems. First... I noticed it changed some of the settings. There was no mention of doing anything other then running the update. Why did some of the settings change? Doesn't it back up the setting before updating?

Anyway... the problem is now the Web Client. It gets all the way to "Connecting" then the screen goes black. I can see a very small picture of the Start Button on the local computer in the lower left. The screen stays black for 15 - 20 seconds then reverts back to the login screen.

[admin]

Hello,

You simply need to clear your client browser cache by pressing ctrl + F5.

[TSPlusSMD]

Clear the browser cache on what? The client?