Engine Error upon building removal

Summary: I had created a two story building, realized that the scaffolding for the second story blocked access to the first story which didnt allow for the builders to complete the building. I went to remove the building received the error in the screenshot below.

Steps to reproduce:

  1. Build a two story building that cant be completed
  2. remove the building

Notes: if you wanna look at the building as well the workers decided to build the second stroy before the first which resulted in the building not being able to be completed.

Attachments: Link to save this is right before i clicked remove.

Version Number and Mods in use: No Mods, Alpha 14 release-523 (x64)

System Information: Windows 10 64-bit, i7-3770k 16GB RAM