iOS Metal-based build crashes at launch
I encountered a crash when deploying a game to iOS with Metal enabled. It seems to only happen if I have a sub-level added to my starting level.
The crash occurs on startup, in Metal-related code, with the following message:
There are rare cases when a build actually starts the first time after deploying, but the following tries always result in a crash. Overall repro rate on my side is estimated to be around 9/10 (maybe 2 or 3 clean starts out of a couple dozen attempts).
More details of the process and environment: Engine version: UE4 4.11.2 (tried both the binary version downloaded from launcher and a source version from GitHub, tag 4.11.2-release) Build process: remote build from a Windows machine on a networked Mac builder Mac software: OS X 10.11.4, XCode 7.3, iPhone SDK 9.3 iOS device: iPad Air with iOS 9.1 or 9.3.1 (these are the two I tried)
I have been able to reproduce this also in a clean, template-based project with the following steps:
I'm attaching a full log from a clean project created this way, from startup to crash.
I hope this is enough information to reproduce this issue. If you need anything more, feel free to ask. I can also zip and upload the full project if required, but the repro steps should probably be sufficient to reproduce the issue.
Looking forward to hearing from you,
asked May 13 '16 at 03:37 PM in Bug Reports
I was able to reproduce it on devices over iOS version 9.0 (9.3.1 to be exact). The other devices I tested on were below 9.0 and the crash did not occur. I went ahead and submitted a Jira for this issue. If you'd like to know if there has been any progress made on this issue, please refer to Jira UE-30847.
answered May 16 '16 at 09:05 PM
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