Whenever I try to launch/build for iOS on any version of UE4 later than 4.16, I always get this error:
LogPlayLevel: Program.Main: ERROR: AutomationTool terminated with exception: System.FormatException: Input string was not in a correct format.
For troubleshooting, I created 2 projects with the stock “blueprint Topdown example”. One named “iOSTest” running on UE 4.16 and one named “iOSTest2” in 4.17
I then launched both using the same provision and certificate on both. One succeeds and works flawlessly, the other fails. Here is the log output for both: UE4 iOS issues - Pastebin.com
if it is relevant, the device being launched to is an iPad2,5. I never have issues launching on iOS on 4.16 regardless of which projects i tested, i tried both 4.17, 4.18 and 4.19 preview, all projects i try fail with the same error on all of these so I believe the problem is linked to some change introduced in 4.17