Ios app hangs on splashscreen

I use Ionic 2.0.0-beta.10 to create the icon and splashscreen of my app. Both of them are sometimes created and sometimes not. when they are created the splashscreen stands on the screen and the app doesn’t start. Is that a Bug or something else? I don’t have also no error output in the console of Safari and in XCode. On Android I don’t have the Problem. Just on ios. How can I solve the problem?

This is a pretty vague error.
There’s not a whole lot of information here in order to help.
Would you be able to put together a small github repo that has this issue for us to look at?

So, this is my error output in Xcode:

[object Object]
2016-07-11 10:15:15.160 myapp[273:21988] ERROR: error JSON.stringify()ing argument: TypeError: JSON.stringify cannot serialize cyclic structures.
2016-07-11 10:15:15.161 myapp[273:21988] deviceready has not fired after 5 seconds.
2016-07-11 10:15:15.162 myapp[273:21988] Channel not fired: onCordovaConnectionReady
2016-07-11 10:15:15.162 myapp[273:21988] DEVICE READY FIRED AFTER 6726 ms
2016-07-11 10:15:15.167 myapp[273:21988] SqlLocalStorageService: Init
2016-07-11 10:15:15.168 myapp[273:21988] ConnectivityService: Init
2016-07-11 10:15:15.169 myapp[273:21988] NewsStreamService - registering:  [object Object]

This looks like a good place to start looking.

Cordova CLI: 6.2.0
Ionic Framework Version: 2.0.0-beta.10
Ionic CLI Version: 2.0.0-beta.32
Ionic App Lib Version: 2.0.0-beta.18
ios-deploy version: 1.8.3 
ios-sim version: 3.1.1 
OS: Mac OS X El Capitan
Node Version: v5.12.0
Xcode version: Xcode 7.3 Build version 7D175 

I get this error just with Xcode on iOS with Mac. On Windows I have no problem.