# Instant crash when opening Landscape toolbox If another hidden sublevel has a Landscape in it

**URL:** <https://forums.unrealengine.com/t/instant-crash-when-opening-landscape-toolbox-if-another-hidden-sublevel-has-a-landscape-in-it/375154>\
**Category:** World Creation\
**Tags:** unreal-engine, crash, Landscape, bug-report, editor, question\
**Created:** [November 2, 2016, 8:37am UTC](https://forums.unrealengine.com/t/instant-crash-when-opening-landscape-toolbox-if-another-hidden-sublevel-has-a-landscape-in-it/375154 "2016-11-02T08:37:20Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Sierra216](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/sierra216/32/1113408_2.png) [@Sierra216](https://forums.unrealengine.com/u/Sierra216)\
**Post date:** [November 2, 2016, 8:37am UTC](https://forums.unrealengine.com/t/instant-crash-when-opening-landscape-toolbox-if-another-hidden-sublevel-has-a-landscape-in-it/375154/1 "2016-11-02T08:37:20Z")

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When I try to create a Landscape in a sub-level AND there is a landscape in another hidden sub-level the editor instantly crashes when I try to open the Landscape toolbox.

[Video](https://www.youtube.com/watch?v=4TM3Vzpcv_k&feature=youtu.be)

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**Author:** ![anonymous\_user\_6e7b421a](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_6e7b421a](https://forums.unrealengine.com/u/anonymous_user_6e7b421a)\
**Post date:** [November 2, 2016, 1:38pm UTC](https://forums.unrealengine.com/t/instant-crash-when-opening-landscape-toolbox-if-another-hidden-sublevel-has-a-landscape-in-it/375154/2 "2016-11-02T13:38:46Z")

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Hello AlphaSierra216,

This is a known issue and has been reported and fixed for an upcoming full engine release.

**[UE-37954](https://issues.unrealengine.com/issue/UE-37954)**

Let me know if you have further questions or need additional assistance.

Thank you,