Look at the 3.0.6 version specifically. I don't know what you call the top section with line numbers, but it says "SessionizeArch" lines are missing. However, below that you see those lines. In those reports you can see the method calls in the stack trace. I always screw up the dsym setup with crashlytics, so it could be that files simply aren't being pushed. The missing lines are coming from a framework, and all have dsym generation turned on for debug, but perhaps the fabric script needs to be run on both. Won't find out tonight, though...