For more information see here Bug Report Template Build: 1.7.1.1 3639 Mode: Survival Mode: Single Player SERVER NAME: SEED-ID: 820914 If applicable: MODIFIED PLAYFIELDS:No Reproducibility:Always (save game on dropbox - link below) Severity: Major Type:Global / Building Base Summary: Elevated base crumbles at placing 6-8 tables Description:I built a Base with a tower. On top I want a room with tables. The debug menu shows that the structure is supported and stable. When I start adding the furniture (tried it with "furnishings(deco)" => "table" only), the entire structure crumbles after 6-8 tables. Something came into my mind: the base is evolved from a wreckage I found at this position. I set a core to the wreck and build the base out of it. Steps to Reproduce: 1) built tower 2) built room 3) add tables Screenshots, Crash Logs, any other Relevant Information or Download links: https://www.dropbox.com/sh/jvklq5zzggmt6yp/AADGgXaNHny1PawSBsBZwaKua?dl=0