Q: Photos not accepting extensions, does not appear in System Preferences

Try the fix in this support document:  See the link below:

If Share options or Markup is missing after upgrading to OS X Yosemite or El Capitan - Apple Support

The Terminal command should enable Photos. Have you tried it?

Hello léonie and Eden,

I've a similar problem here. On my iMac everything runs with photos extensions as it should be, but not on my two years old MacBook Pro (Both on El Capitan). None of my extensions are showing up (beFunky, Pixelmator Distort, Snapheal CK, Tonality CK, Noiseless CK, Intensify CK, FX Photo Studio CK). Since several weeks I searched for a solution, tried the terminal command above, no way.

My first idea, there are maybe some corrupt settings files, but I don't want to try to delete without knowing which I should try.

Are you having the same version of El Capitan installed on both Macs? You need MacOS X 10.11.1 or later.

yep, Version 10.11.2 Beta 5 (15C48a) on both of them

and already rebuild launch services database, no change

Yesterday evening I had the same problem, after downloading the kit from Macphuns website. Following a restart of the iMac and reopening of photos, snapheal and noiseless became available (tonality was already previously installed). These 3 now work fine from within photos, but noiseless is very slow.

Did the extensions ever work on that Mac?  If it is the first time you are trying to use them, launch the applications all at lear once. Then they will install the extensions. Then restart the mac.

To Léonie: No they never did, tried all this, hoped, maybe an update for Snapheal with new extension version could do the trick, but no

and to Helge, I already had five or six restarts today after all the afore-mentioned try and errors, no change at all. Photos still stays deactivated. I'm really lost on this.

ciao but thanks

Ralf

Photos still stays deactivated. I'm really lost on this.

Probably the curse of running Beta software.

I'd reinstall the system by booting into recovery, to be sure to have a full installation, see: OS X: About OS X Recovery

Just make a current backup and install on top of your current system, you don't need a clean install.

Ralf,

when you downloaded the kit from the website and extracted/installed the individual applications, there probably was a screen popping up that allowed you to select the applications into which you wanted the extensions installed (at least it did in my case, and "photos" was not in the selection list). I straight away downloaded a copy again, as I suspect that Macphun is in the process of updating the apps, and on second attempt I must have received a later copy so the embedment into photos worked.

In case that you are registering an older trial copy it would be worthwhile downloading a new copy again. If this also does not work, you might have to go to the Applestore and download the 3 apps from there (the price for these individual apps is much less than the total kit price anyway).

Helge,

What version of Photos are you running and from what i've seen on the Macphun website there would not appear to be a plugin for lens correction. Did I miss something on the website or are you using a different plugin for Photos for lens correction?