This is a screenshot from my Crashlytics dashboard. As you can see the stability of the app is sub-par to say the least (~10% of all users, are affected by at least one crash on any given day or approx ~3% of all sessions). I am only showing the to top 2 issues on the screenshot, but easily 90% of all crashes can be attributed to the Fling SDK version 1.3.1
I don't have any reasons to believe that the app itself is (indirectly) causing this crashes of the Fling SDK, but I am not sure. In particular my app is using other SDKs for a similar purposes (Chromecast etc...), and I suspect some unwanted interactions between the different frameworks being a factor possibly.
Anyway, if you are using the iOS Fling SDK version 1.3.1, I would be really curious to know your crash rate numbers in % of users and % of sessions.