Some issues with the desktop app are caused by an issue in the app cache for your device. Take the following steps to clear the app cache:
Step 1:
Open your file explorer (folder icon) and type %appdata% in the top navigation bar.
Step 2:
From here click on and rename the Rubex folder to RubexOLD. This can be done by right-clicking the Rubex Folder and selecting Rename.
Step 3:
Open the Revver application. It will treat Revver like it was installed for the first time. Select the relevant server when it gets to this screen. This is based off of your location.
Since I live in the United States I would select Option 1 to 'Connect to the US hosted Revver (Cloud)'
This didn't resolve my problem.
If you are still having problems with Revver opening please contact technical support via chat at www.revverdocs.com