Test flight app just closes before it launches

We're using TestFlight for internal testing .App has no issues when we build the app and install it using the IDE. Users who got the App via TestFlight can install the app on their phones without any problem. The application just closes before it launches. We are using the latest xcode for buildning the cordova app.

Anyone have ideas about what might be causing this? Any ideas for workarounds? We don't want to stop using TestFlight.