I get this error message when opening Firefox "onload error TypeError: TcFfUpdates.getTcPluginsInstance().getNewExtensionsList is not a function"

Each time I open Firefox I get the error message. I have unistalled the product, re-downloaded it and installed it with the same results. Otherwise the browser seems to work well.

Start Firefox in <u>[[Safe Mode]]</u> to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.com/kb/Safe+Mode
*https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes

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