How to fix a problem installing Frameio extension for Premiere Pro CC2015

Update:
There is a new installer from Frameio:

It came to our attention that some Windows users and some Mac OS X users running 10.10.x were having trouble with the installation. We've since fixed the issue so you should be able to download again. Please grab the new installer below. 

Mac OS X Installer 

Windows Installer 

If you're still having trouble please shoot me a message. Im happy to help! 

Best,

Thomas, Frame.io Integrations Engineer

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Original post:

I was trying to install the Frame.io Extension for Premiere Pro only to find out that Window/Extensions was greyed out in Premiere.

After running the Frame.io installer a couple of times, no luck. Window/Extensions stayed greyed out:

Obviously something was missing.

So I then went to Window/Browse Add-ons, which started a Safari page with Adobe Add-ons on it --- and... No Frame.io add-on there, but I got the Wipster Review Panel add-on for PP.

That synced fine to my CC and then appeared in PP under Window/Extensions - not greyed out anymore!  Cool, great...  Except Frame.io still did not show under Window/Extensions.

Somehow it looked like the Installer was not installing, so I searched for Frameio on my HD and under User/Library/Application Support I found a Frameio folder with a PremiereInstaller folder in it, and inside this folder was a install.txt with the following:

2016-04-13 18:08:52.625 Frame.io Premiere Installer[1870:197477] Launched installer
2016-04-13 18:08:55.105 Frame.io Premiere Installer[1870:197477] SUCCESS download json
2016-04-13 18:09:03.201 Frame.io Premiere Installer[1870:197477] SUCCESS download zxp
2016-04-13 18:09:03.201 Frame.io Premiere Installer[1870:197477] FAILED setting permissions for /Library/Application Support/Adobe/CEP

All right, we're getting somewhere, I then looked into /Library/Application Support/Adobe/CEP/extensions and found out that the Wipster "widget" was in there:

I also noticed that permissions for the Adobe folder looked OK, on the other end, the permissions for the CEP and extension folders looked funky:

Notice the "Fetching..." in the extension folder permissions?  To straighten this up, I went to the Adobe folder info and "Apply to enclosed items" the same permissions, and this fixed the "Fetching..." oddity, to "system".

I installed the Frameio for Premiere again, and this time it appeared in the extensions folder:

And this ultimately fixed the problem, now Frameio extension shows as it should under Window/Extensions: