The script behaviour 'X' could not be instantiated! iOS x64 Unity 5.3.2p1

How to fix this error? Here is full Log:

Spoiler: Log

Code (CSharp):

1. 2016-02-01 01:56:44.867 oceanmotion[1709:554764] [#303] +[Everyplay initWithDelegate:] initializing
2. 2016-02-01 01:56:44.957 oceanmotion[1709:554764] Everyplay SDK build: 2110
3. CrashReporter: initialized
4.  
5. 2016-02-01 01:56:45.332 oceanmotion[1709:554764] -> registered mono modules 0x1026012d0
6. 2016-02-01 01:56:45.566 oceanmotion[1709:554764] You've implemented -[<UIApplicationDelegate> application:didReceiveRemoteNotification:fetchCompletionHandler:], but you still need to add "remote-notification" to the list of your supported UIBackgroundModes in your Info.plist.
7. -> applicationDidFinishLaunching()
8. PlayerConnection initialized from /var/mobile/Containers/Bundle/Application/15D58FAC-9B50-49F4-9C81-E8FC7FED1EE3/oceanmotion.app/Data (debug = 0)
9. PlayerConnection initialized network socket : 0.0.0.0 55000
10. Multi-casting "[IP] 100.99.184.92 [Port] 55000 [Flags] 3 [Guid] 708047094 [EditorId] 1776808867 [Version] 1048832 [Id] iPhonePlayer(iPhone-Ila):56000 [Debug] 1" to [225.0.0.222:54997]...
11. Waiting for connection from host on [100.99.184.92:55000]...
12. PlayerConnection accepted from [10.0.0.4] handle:0x9
13. -> applicationDidBecomeActive()
14. Init: screen size 1080x1920
15. Initializing Metal device caps
16. Initialize engine version: 5.3.2p1 (82077c0be25b)
17. The script behaviour 'DarkTonic.MasterAudio.EventSounds' could not be instantiated!
18. (Filename: /Users/builduser/buildslave/unity/build/Runtime/Mono/MonoBehaviour.cpp Line: 1522)

 

Trying out downgrading to 5.3.1p4 and run from there...

 

Works fine on Unity 5.3.1p4. I think there are IL2CPP wrapper problem