Some Flash applications not working in Firefox...

[Milennin]

I have the latest Firefox and Flash Player installed. But some applications just don't run at all. For example, videos on https://www.guildwars2.com/en/media/videos/ just show a black screen. And this site is remains completely blank: thisissand.com. These applications do work fine on Internet Explorer, but no matter what I try, it won't work on Firefox. Some other things, like Flash movies on http://newgrounds.com work just fine on Firefox.
I've already tried re-installing Flash. Tried an older version of Flash. Tried disabling Flash safe mode. Nothing changes.
Looking for help.

 

[OldMX]

Not a single issue here, perhaps you need to run CCleaner with everything but the last option checked and see if you're running latest Firefox and Flash versions. (FF 14.01 and Flash 11.4.402.265 )

 

[Milennin]

I solved it earlier today. Apparantly AVG Do Not Track blocked the applications. But thanks for the reply.8)