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You tube use to work fine for me in Fire Fox ...Now wont...I dont recall changing anything.

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You tube just shows black screen, works fine in internet explorer.

Haven't upgraded or changed versions of firefox or added any plug=ins Im awarer of.  Had several automatic updates come through of other programs, such as flash, ect.  But I have refused to upgrade firefox due to having to give up screen grab which I love too much to do it, so have stayed with  older version.  
Had no problem with you tube in the past.
You tube just shows black screen, works fine in internet explorer. Haven't upgraded or changed versions of firefox or added any plug=ins Im awarer of. Had several automatic updates come through of other programs, such as flash, ect. But I have refused to upgrade firefox due to having to give up screen grab which I love too much to do it, so have stayed with older version. Had no problem with you tube in the past.

Chosen solution

First, you should update immediately to Firefox 15.0.1. There are major security issues in Firefox 7 that are fixed in 15.0.1.

As for your add-on, it will probably work in Firefox 15 (addons are now defaulted to compatible). If not, you can try installing https://addons.mozilla.org/en-US/firefox/addon/screengrab-fix-version/ which is an updated version of the same add-on.

After updating, let me know if the youtube issue is still happening.

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Chosen Solution

First, you should update immediately to Firefox 15.0.1. There are major security issues in Firefox 7 that are fixed in 15.0.1.

As for your add-on, it will probably work in Firefox 15 (addons are now defaulted to compatible). If not, you can try installing https://addons.mozilla.org/en-US/firefox/addon/screengrab-fix-version/ which is an updated version of the same add-on.

After updating, let me know if the youtube issue is still happening.

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hello, firefox 7 is affected by dozens of critical security vulnerabilities. please upgrade as soon as possible and use https://addons.mozilla.org/firefox/addon/screengrab-fix-version/ instead.

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Thanks Guys!... It fixed the issue with YouTube!

I do feel better having the latest version of FF and the new Screen grab is working... so I'm a happy camper.

Still