apparently Gobbler, Native Instruments and others do not currently work under El Capitan , I got this from Gobbler this morn, I'm guessing many on this list did as well:
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Hey Charles>,
With the release of OS X 10.11 El Capitan around the corner, we’d like to strongly recommend that you NOT upgrade just yet. At this time, we cannot guarantee Gobbler 2.0 app compatibility with El Capitan.
Additionally, a number of DAW and plugin publishers suggest delaying the upgrade - see statements from Slate Digital, Native Instruments, Arturia, and Steinberg.
Please see the Gobbler Knowledge Base for more information.
Thanks for your attention,
The Gobbler Team