Error: Message handler group 'UITool' has not been registered.

Hi all, just wondered if anyone has come across the below before and have any suggestions on how to fix please?

We have a client that when opening Opera, get the below error before the login screen appears.

We have uninstalled and reinstall the client which seemed to resolve the issue for a short period of time but have now started to experience this again. Standard anti-virus exclusions are in place, the only other software installed relating to Opera is Online Filing Manager and today I gave the Pegasus folder in Program Files (x86) and Program Data 'everyone' and full control permissions. All other client machines at this customer have not experienced the issue, just one user.

Many thanks!

Charley

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Alex Aherne

Hi Charley,

Did you get anywhere with this one at all? We have a site that also experiences this exact same error intermittently when logging in. They get both of the below.

Thanks,

Alex

ianc

I've seen this once before. The fix was to run Opera as administrator. Don't know if that helps (or what it does)

Alex Aherne

We resolved this on our site by giving the user full control over the registry key for Opera 3.

claire-craig

Hi Aaherne, got a site who today are just starting to get the UITool critical error. Could you confirm if it was the below registry key you;ve given full control over...

ComputerHKEY_LOCAL_MACHINESOFTWAREWOW6432NodePegasus

Regards

Claire

Alex Aherne

Yes, that's the one.

claire-craig

Thank you so much :-)

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