Apple App Store FIAS app (iOS App SDK) has loading issues

...and the customers have tried everything from rebooting to relaunching. Even performing a hard reset/force quit of FIAS : holding the power button until the 'slide to power off' page appears and then pressing the home button for a few seconds until the iOS desktop re-appears without the FIAS app running. After executing a 'foce quit' FIAS should either re-write a copy from the bundle or check the consistency of an existing file but it does neither - the customer simply gets the same error dialog.

Just looking at the support inquiries of today it seems the issue not related to iOS 9.3. I have reports of user with the latest hardware (iPhone 6s) and iOS 9.2 who experience the same issue. Some users can launch it on their iPad but not on their iPhone or vice versa. The file is very mature FM file continuously developed over 6 years with thousands of users and zero bugs. There are no issues or complains in regards to the identical desktop version.

The only unusual thing is that the FM file does not have the standard fmp12 extension which I have now changed in the update (which still needs to be approved by Apple). There is no difference between the name of the solution and the name that shows up in the error dialog. No special characters or spaces where used. The app has only one file. The slide to cancel red arrow graphic had to be deleted to comply with Apple GUI standards (it resembled their own 'slide to cancel'  GUI elements to much). It did not affect any of the launches tested by myself (and Apple) afterwards.

Not every user has launch issues but it is a very high percentage and growing daily. I have a faint shimmer of hope that after the initial crash FIAS is looking for cache data assuming that the file ends with fmp12. It's not very likely though since I have tested on a large selection of devices and forcibly crashed the app many times. Apple has also taken close to 3 weeks to test on every device including iPods. It is a universal app. The majority of users who experience this issue are iPad users but I also have reports from iPhone users with the latest hardware.

Please let me know if you want a link to the actual app. I would also love to provide you with a copy of the XCode project. I can email you screenshots of users who took pictures of the dialog. I have already done numerous tests with willing users and nothing worked. I have never experienced the issue. Neither did Apple - otherwise the app would not have been admitted to the store. I image the only reason why this never came up before is because very few FIAS apps have been admitted so far and most of them have a smaller user adoption.

Thanks TSGal - I have emailed everything.