That did it I got the UI back.. Now I am scared to backup the export setting from BI 4 again to this it might do it again.. and break things.. What is the best way to import those camera settings ?
Here is what I would personally try....
Shutdown all instances of
BlueIris.exe (Service, console, etc....)
Run the full installer for V5
Open V5
V5 should say it migrated your settings from V4
Reboot
Open V5 again - Make sure all is well
Uninstall V4 - Select Keep settings
Check if the V4 folder is still under C:\Program Files (mine was). If so, move it somewhere else safe to avoid migration remnants from trying to point toward it
Reboot again for good measure
Open V5 and make sure all is still well
Once complete with the above, check BI 5 settings to make sure nothing is still pointing toward the V4 folder... Like the web-server.
OPTIONAL - Audio alerts tones for each camera may still be pointing toward the V4 folder as they were in my registry settings. Not causing a problem, so I'll mess with that another day.
If you encounter the same issue after all the above, backup then delete just
"Computer\HKEY_CURRENT_USER\Software\Perspective Software\Blue Iris\WindowMetrics" as that single key be the root cause of all the issues.
EDIT: if you’re trying to salvage camera setup data, the only way I can think of is to reimport the broken registry settings into V4 you backed up and try deleting that single key above. If that works, then backup again for good measure, and run the steps I had originally listed above. Some of the steps may not be needed, but it should help track down where things are breaking.