# Engine Error after removing a building

**URL:** <https://discourse.stonehearth.net/t/engine-error-after-removing-a-building/30874>\
**Category:** Other Reports\
**Tags:** duplicate\
**Created:** [June 24, 2017, 5:25pm UTC](https://discourse.stonehearth.net/t/engine-error-after-removing-a-building/30874 "2017-06-24T17:25:44Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![MeatVegetable](https://sea2.discourse-cdn.com/flex022/user_avatar/discourse.stonehearth.net/meatvegetable/32/55198_2.png) [@MeatVegetable](https://discourse.stonehearth.net/u/MeatVegetable)\
**Post date:** [June 24, 2017, 5:25pm UTC](https://discourse.stonehearth.net/t/engine-error-after-removing-a-building/30874/1 "2017-06-24T17:25:44Z")

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Had built a small structure to help clear something quickly then this popped up when I removed the structure.

release-707 (x64)  
…hearth/components/scaffolding/scaffolding\_region.lua:791: attempt to index field ‘\_owning\_scaffolding’ (a nil value)  
stack traceback:  
radiant/modules/common.lua:245: in function 'report\_traceback’  
radiant/modules/common.lua:256: in function \<radiant/modules/common.lua:250\>  
…hearth/components/scaffolding/scaffolding\_region.lua:791: in function 'instance’  
radiant/modules/events.lua:291: in function \<radiant/modules/events.lua:285\>  
[C]: in function 'xpcall’  
radiant/modules/common.lua:265: in function 'xpcall’  
radiant/modules/events.lua:285: in function \<radiant/modules/events.lua:251\>  
[C]: in function 'destroy\_entity’  
radiant/modules/entities.lua:83: in function 'destroy\_entity’  
stonehearth/services/server/build/ladder\_builder.lua:142: in function \<stonehearth/services/server/build/ladder\_builder.lua:123\>  
[C]: in function 'destroy’  
stonehearth/services/server/build/ladder\_manager.lua:71: in function '\_destroy\_builder’  
stonehearth/services/server/build/ladder\_builder.lua:455: in function '\_check\_if\_valid’  
stonehearth/services/server/build/ladder\_builder.lua:325: in function '\_update\_build\_mode’  
stonehearth/services/server/build/ladder\_builder.lua:114: in function \<stonehearth/services/server/build/ladder\_builder.lua:113\>

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**Author:** ![Relyss](https://sea2.discourse-cdn.com/flex022/user_avatar/discourse.stonehearth.net/relyss/32/41785_2.png) [@Relyss](https://discourse.stonehearth.net/u/Relyss)\
**Post date:** [July 5, 2017, 1:09pm UTC](https://discourse.stonehearth.net/t/engine-error-after-removing-a-building/30874/2 "2017-07-05T13:09:49Z")

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A post was merged into an existing topic: [Engine error about scaffolding A19 & A20](https://discourse.stonehearth.net/t/engine-error-about-scaffolding-a19-a20/26145)

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<div class="post-metadata">

**Author:** ![Relyss](https://sea2.discourse-cdn.com/flex022/user_avatar/discourse.stonehearth.net/relyss/32/41785_2.png) [@Relyss](https://discourse.stonehearth.net/u/Relyss)\
**Post date:** [July 5, 2017, 1:09pm UTC](https://discourse.stonehearth.net/t/engine-error-after-removing-a-building/30874/3 "2017-07-05T13:09:49Z")

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