I can't play videos on youtube when I am connected to my account

This problem just started today, before that I had no problem with youtube. Earlier today, I tried to reload a video that I had seen earlier and received the message "an error has occurred." I have tried everything on youtube troubleshooting page, nothing helps. I've upgraded to Firefox 24. I tried to use youtube in Chrome and Safari, and it worked fine.
Then I tried my youtube account signature in Firefox. Videos played very well. I signed up, and the error was returned. I tried logging into my account in Safari and Chrome (I had not been signed in whem I tested them before) and they have always worked.
So the videos will not play in Firefox, but only when I am connected to youtube and work well in Safari and Chrome, if I am connected or not.

If clearing cookies doesn't work, then it is possible that the cookies.sqlite file that stores the cookies is corrupted.

Rename (or delete) cookies.sqlite (cookies.sqlite.old) and delete other files to present as cookie cookies.sqlite - journal in the profile folder of Firefox in the case where the cookies.sqlite file has been corrupted.

Tags: Firefox

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