It seems RAAS Professional is also a problem for me.
I reinstalled Windows 7, FSX, then EZdok and it worked. Then I installed PMDG NGX737-800...still no problem. EZdok showing up in the addon menu and working.
THEN installed PMDG 777 with RaasPro and EZDok won't show in the addon menu, only RaasPro does.
When I delete the section of RaasPro in the dll.xml file in application data/microsoft/fsx there is no problem and EZdok is in the addon menu again.
And yes, everytime I ran the ezconfig after installing new aircraft.
Still trying to find out why this is happening. Maybe more PMDG 777 users have this problem?