the problem is that the flashplayer you've installed is not a debugger version. If your flashplayer is a debug version, then you casually open a Flash page, then right click on Flash, there will be a debugger, menu, of course, it is now unavailable.
My solution is to delete the original Flashplayer, and then install the debug version of the Flashplayer.
Resolve the steps (try the following methods, respectively):
1. installation directory to flash Build 4: C:\Program files\adobe\adobe flash Builder 4\player\win
Click Install Flash from Adobe Flash Builder, and then download the debug version after the installation is complete
Website: https://www.adobe.com/support/flashplayer/downloads.html
Note that the above marked is the debug version of IE browser: Always remember to update Flash Player after installing the debug version. In particular, anti-virus software prompt updates, remember not to update, as long as the update, your debug version will not be used ...
Flashbuilder unable to find a solution for the required version of the Adobeflashplayer debugger