Keeps crashing ipad mini iOS 9.1

[oc-tk]

After fighting with app ids i got this error: keeps crashing:

2015-11-23 18:42:01.260 GammaTest[705:169251] First execution activation was NOT triggered
2015-11-23 18:42:10.380 GammaTest[705:169251] enabled: 1
2015-11-23 18:42:10.390 GammaTest[705:169251] Lock status: 0
Assertion failed: (file != NULL), function +[GammaController setGammaWithRed:green:blue:], file /Users/tomaszkaczmarzyk/Downloads/GammaThingy-master/GammaTest/mvc/controller/GammaController.m, line 138.
warning: could not load any Objective-C class information from the dyld shared cache. This will significantly reduce the quality of type information available.
(lldb)

[deviantintegral]

I ran into this as well. In my case, I made a mistake in specifying one of the group IDs. If you step through the debugger, check what suitName is in that method. I had to clean the build (Product -> Clean), and then everything worked.

[stefandesu]

Just a quick note because I just had the same problem and couldn't get it to work at first. You have to specify the correct AppGroupIdentifier everywhere in the project (use Find) and THEN clean the build. That finally worked for me.

[istvanrath]

More specifically, change "APP_GROUP_IDENTIFIER" to whatever your app group ID is, in the Build Settings section for the GammaTest project, right at the bottom (under "User-Defined").