Clear the Dotnet Wrapper files
Right click the Windows Start Menu button and type "%temp%" to open the Temp files located at C:\Users\[UserName]\AppData\Local\Temp
Make sure the Catalog page is closed by clicking the X in the upper right hand corner of the window.
If the window will not close, right click on the task bar at the bottom of the screen and select task manager
Find the "LocalWrapper" and right click on it and select "End task"
Delete the dotnetbrowser-chromium folders
- Try to open the catalog again.