Dreamweaver extensions will not install

Question

After some recent updates to the Adobe CC apps, my Dreamweaver app (as stated in the install that some extensions would have to be reinstalled), in particular the Extension Manager CC, will not reinstall my extensions.  And these are necessary since they are my menu extensions - I cannot modify, add, etc. without them.  I get an error message from Extension Manager that Dreamweaver 6 or higher is needed for this extension.  I checked, this Dreamweaver version is 15.  So what gives?
I tried going through and removing preferences, even found Extension Manager C6 still installed - so removed that too.  I need some advice on what to do.
Thank you.
Tom
I am sorry about this new topic, I posted this problem in another's topic because I didn't know how to start a new topic.  Duh, found the pencil icon today at the top to start a new discussion. 
Updated today in that topic that I had uninstalled and reinstalled Extension Manager (7.3.2.39) and still get this error:
As I said in other post, the current Dreamweaver CC is version 15.  The above picture was just taken, after another uninstall/reinstall of Extension Manager 7.3.2.39.
Scratching head - and can't afford to lose any more hair!
Thanks for reading - - Tom

Answer 1

One other note and I don't know if it means anything...  When the above dialog is dismissed by hitting "OK" the Extension Manager app shows.  On the left column are many Adobe CC applications but missing is Dreamweaver.  Is this an issue?  Or is it because on extensions have been installed. 
FYI - I've tried the many suggestions on curing this problem (thank you all very much) to no avail - with another issue that popped up in Dreamweaver that its not saving my server info when quitting the app,  Have to replace all them (ID & PW) for all my sites I manage.  My solution at this point is to keep Dreamweaver running all the time.  That works but there will be a time when a restart or shutdown will come about.  The info is no big deal to replace, but the big thing is I've never had to until this recent update of DW.  Sounds like I'm ******** about DW, no I'm not.  It is just a small annoyance that is causing extra time when doing my web maintenance daily and adds to that time - which already is being taxed to the enth degree.
I'm sure i've maybe upset some of the regular forum users since I've had to learn the forum's intricacies - mostly about how to post a new topic.  Please forgive my ignorance on that, as I posted in another's question about my problem since I couldn't find how to start a new one (which is now a "duh").
Hope Adobe or my menu software people can figure this out.  I lean towards a DW issue since it arose after the last update (of course that could still be an incompatibility with my extension.
I am trying to find a work around to make modifications to my menus.  My other system is experiencing the same issue (as noted above in previous message) although I could swear I had not updated DW on it.  Will get to that when I have some time to look into it.
Do not know how to make changes to these menus without the extension being active even though they're javascript (I believe).
Hope some of the brainiacs here can assist.  Thanks in advance.
Tom