# Error building stone building

**URL:** <https://discourse.stonehearth.net/t/error-building-stone-building/24774>\
**Category:** Previous Build Reports\
**Created:** [August 20, 2016, 9:35am UTC](https://discourse.stonehearth.net/t/error-building-stone-building/24774 "2016-08-20T09:35:04Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Thomas\_Rippon](https://sea2.discourse-cdn.com/flex022/user_avatar/discourse.stonehearth.net/thomas_rippon/32/58257_2.png) [@Thomas\_Rippon](https://discourse.stonehearth.net/u/Thomas_Rippon)\
**Post date:** [August 20, 2016, 9:35am UTC](https://discourse.stonehearth.net/t/error-building-stone-building/24774/1 "2016-08-20T09:35:04Z")

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**I get an error message when building a custom stone building:**

release-610 (x64)  
stonehearth/components/wall/wall\_component.lua:369: attempt to index a nil value  
stack traceback:  
[C]: ?  
stonehearth/components/wall/wall\_component.lua:369: in function 'connect\_to\_columns’  
stonehearth/services/server/build/build\_service.lua:1223: in function 'init\_fn’  
stonehearth/services/server/build/build\_service.lua:505: in function '\_create\_blueprint’  
stonehearth/services/server/build/build\_service.lua:1221: in function '\_create\_wall’  
stonehearth/services/server/build/build\_service.lua:1208: in function '\_add\_wall\_span’  
stonehearth/services/server/build/build\_service.lua:1037: in function 'visitor\_fn’  
stonehearth/lib/build\_util.lua:700: in function 'grow\_walls\_around’  
stonehearth/services/server/build/build\_service.lua:1036: in function 'grow\_walls’  
stonehearth/services/server/build/build\_service.lua:1008: in function 'cb’  
stonehearth/services/server/build/build\_service.lua:1533: in function 'do\_command’  
stonehearth/services/server/build/build\_service.lua:1007: in function \<stonehearth/services/server/build/build\_service.lua:1005\>  
release-610 (x64)  
c++ exception: lua runtime error  
stack traceback:

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<div class="post-metadata">

**Author:** ![Doc\_Brano](https://sea2.discourse-cdn.com/flex022/user_avatar/discourse.stonehearth.net/doc_brano/32/50733_2.png) [@Doc\_Brano](https://discourse.stonehearth.net/u/Doc_Brano)\
**Post date:** [August 20, 2016, 9:39am UTC](https://discourse.stonehearth.net/t/error-building-stone-building/24774/2 "2016-08-20T09:39:50Z")

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oh no its back 🙂 we have had this one a while back i believe.

Which version are you using? any mods installed? Maby upload the template?

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<div class="post-metadata">

**Author:** ![Thomas\_Rippon](https://sea2.discourse-cdn.com/flex022/user_avatar/discourse.stonehearth.net/thomas_rippon/32/58257_2.png) [@Thomas\_Rippon](https://discourse.stonehearth.net/u/Thomas_Rippon)\
**Post date:** [August 20, 2016, 11:36am UTC](https://discourse.stonehearth.net/t/error-building-stone-building/24774/3 "2016-08-20T11:36:09Z")

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0.17.0 release 610 x64 build

no mods

didn’t get as far as creating a template before the error and it wouldn’t let me build in that location