problemas con plugin flash

[iOtro]

Como usas Firefox, en la web de Mozilla comentan este error, igual es el tuyo...

Quicktime plugin takes over Flash
If you see a Quicktime symbol with a question mark where the Flash content should be, it means that Quicktime has taken over handling of Flash files. On Mac OS, go to the Quicktime System Preferences and deselect the corresponding MIME types, which are found by going to the Advanced tab in recent OS X versions.
If the problem persists, remove the file "pluginreg.dat" from the "Firefox" or "Mozilla" folder in the profile folder location.