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**Category:** Platform & Builds\
**Tags:** crashes, HTML5, unreal-engine, Lighting, question\
**Created:** [March 3, 2017, 1:08pm UTC](https://forums.unrealengine.com/t/ue4-html5-export-and-mobile-previewer-crash/386785 "2017-03-03T13:08:23Z")\
**Posts on this page:** 2\
**Page:** 1
**Author:**  [@anonymous\_user\_786c74c7](https://forums.unrealengine.com/u/anonymous_user_786c74c7)\
**Post date:** [March 3, 2017, 1:08pm UTC](https://forums.unrealengine.com/t/ue4-html5-export-and-mobile-previewer-crash/386785/1 "2017-03-03T13:08:23Z")
my project works fine under the VR view and standalone view.
But I changed it into the mobile preview, it crashed and all lightings all missing.
And the same situation happened when I exported it to the HTML5 package. No lights, objects mess up.
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**Author:**  [@anonymous\_user\_0c62419a](https://forums.unrealengine.com/u/anonymous_user_0c62419a)\
**Post date:** [March 6, 2017, 4:38pm UTC](https://forums.unrealengine.com/t/ue4-html5-export-and-mobile-previewer-crash/386785/2 "2017-03-06T16:38:19Z")
Hey Lisha,
I tried looking up your callstack but it seems you haven’t submitted your crash to our database. Without the callstack information I can’t verify this for sure but I suspect you are getting this crash: [Unreal Engine Issues and Bug Tracker (UE-40591)](https://issues.unrealengine.com/issue/UE-40591)
We plan to implement this in our 4.15.1 hotfix so if that is the case you can try this again when we release the hotfix.
If you continue to have issues you can reopen this post by leaving a comment.
Cheers,
Ed