Geometry making my iOS app crash

anonymous_user_44c3e310 · August 9, 2015, 7:21pm

Hi guys,

I’m having some pretty inconsistent results with packaging my game onto my iphone and seeing how the scene is looking.

I’ve run into a problem where when i tap the app to open it on my iphone, it cannot get past the splash screen without suddenly crashing and reverting to the iphone home screen.

I’ve found that this problem seems to be related to the geometry that i am importing. But the geometry in my scene is extremely simple. I know this because the app is working before importing an object, doesn’t work with the object in the scene, and then works again when i delete the object.

I’'m using 3DS . Most of the objects are generated from lines using sweep and just basic boxes that have been converted to editable polys. They’re all quads, all having lightmap uvs and i’ve reset the xform before exporting. I’m importing using fbx.

Is there something i’m missing that has to be done to geometry when developing for iOS?

It’s pretty frustrating hitting a wall when i’ve imported an object that is literally a box and it’s causing a crash.

Thanks in advance to anyone who can help me with this issue.

anonymous_user_44c3e310 · August 11, 2015, 8:19pm

Can someone please help me with this issue. This is the reason I downloaded unreal and became an app developer. Not being able to get 10 meshes on my ios devices so far is frustrating.

I changed to a difference device and i managed to get some more objects in, but only like 3 more. This objects are literally just box shapes and variants. What’s going wrong?

anonymous_user_a08c0bf2 · August 12, 2015, 9:04pm

Hey ,

In order to better assist you, could you please provide me with some screenshots of what you’re having trouble with? Please also provide me the too from the crash, provide them in a .txt file uploaded to your post.

Thank you!

anonymous_user_a08c0bf2 · August 17, 2015, 5:11pm

Hey ,

I have not heard from you since your initial post and for that reason, I will need to close this thread as resolved. If you have any further questions, please let us know. Have a great day!

anonymous_user_56606f561 · November 12, 2015, 8:46pm

I’m seeing the same things when I load a simple FBX of a couple boxes created in C4D. When launching on the iPhone or Android device it crashes.

anonymous_user_a08c0bf2 · November 12, 2015, 9:14pm

Dan,

Please answer a few questions:

Which version of the engine are you on?
Which type of iOS device are you using?
Which version of the OS is the iDevice on?
Can you reproduce this in a newly created project?
Provide me with the [full device ][1].

Looking forward to hearing back from you, thanks!

A new, community-hosted Unreal Engine Wiki - Announcements - Epic Developer Community Forums

anonymous_user_56606f561 · November 12, 2015, 9:54pm

Engine: 4.9
iPhone 6S iOS 9.1
Samsung Note 4 Android 5.0

I am using a newly created project and a simple FBX of a cube generated in C4D and one Generated in Maya.

Working on getting you device

anonymous_user_56606f561 · November 12, 2015, 9:56pm

gist.github.com

https://gist.github.com/danzeeeman/41c1eed64a879c43e88b

Unreal Crash Log

Incident Identifier: 6D098321-031D-461C-B935-26678F743B33
CrashReporter Key:   4b784c86a3cb54e790a0c9e9e621d13bfe6ee671
Hardware Model:      iPhone8,1
Process:             UE4Game [4949]
Path:                /private/var/mobile/Containers/Bundle/Application/6F78AD0C-E4FA-4066-94D6-B021435D1ECD/UE4Game.app/UE4Game
Identifier:          com.YourCompany.FBXMobileTest
Version:             0.12 (1.0)
Code Type:           ARM (Native)
Parent Process:      launchd [1]

This file has been truncated. show original

anonymous_user_a08c0bf2 · November 13, 2015, 4:21pm

Dan,

I need to see the from when the device is crashing in order to try and figure out what’s happening with your devices. Do you have a small sample project you could provide that definitely crashes on your devices?

MoSaber · February 3, 2016, 5:45pm

The same problem here engine 4.10.2 iOS 9.2.1 iPod5 with any simple fbx game will crash on the device!

MoSaber · February 3, 2016, 10:36pm

I had the same problem like I mentioned, Now I find that when I restart the editor and pack my project again it dos not crash on the device anymore! I notes that when I import another fbx and pack one more time on the device sometimes it will crash again on the device so I find the best solution for the problem at the moment is to restart the editor everytime I need to pack my projects that’s works with me everytime.

anonymous_user_a08c0bf2 · February 5, 2016, 8:07pm

Let us know if you need any additional help.

Tenacity · April 11, 2016, 5:31am

OMG THANK YOU!!! You’re right you just have to close the editor and restart and repack!!! Dude!!! You saved my life. Couldn’t even get a cube in. This is confirmed bug at least on iPhone5 thats what i’ve tested on.