After removing Zoom Page WE 19.4 (the broken version), installing Zoom Page WE 19.5 may not always be successful.

To install Zoom Page WE 19.5, please follow these steps:

- Start Firefox.
- Go to 'Tools > Addons and Themes' and remove Zoom Page WE 19.4.
- Restart Firefox and then close Firefox.
- Go to 'Help > More Troubleshooting Information'.
- In the 'Application Basics' section, look for the 'Profile Folder' entry and click on the 'Open Folder' button.
- In the file manager, select the 'extensions' folder.
- If there is a 'staged' sub-folder, then delete the 'staged' sub-folder.
- If there is a 'trash' sub-folder, then delete the 'trash' sub-folder.
- Close Firefox and then restart Firefox.
- Install Zoom Page WE 19.5 from: https://addons.mozilla.org/en-US/firefox/addon/zoom-page-we/
- Restart Firefox.