I have Ver. 3.6.13 and I have reinstalled to no avail. My TABS do not work, I cannot open a new tab...either from the '+' tab or from within the 'File' menu

Everything else seems to work fine. But I cannot open tabs. I just downloaded the latest and same version and reinstalled. That did not work.
Thank you

Start Firefox in [[Safe Mode]] to check if one of the add-ons is causing the problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).
* Don't make any changes on the Safe mode start window.
See:
* [[Troubleshooting extensions and themes]]
If it does work in Safe-mode then disable all extensions and then try to find which is causing it by enabling one at a time until the problem reappears.
* Use "Disable all add-ons" on the [[Safe mode]] start window to disable all extensions.
* Close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")

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