Engine Error Fabricator nil value

Title: Engine error Fabricator nil Value


Steps to reproduce:

  1. build a two story building and place 2nd story walls only
  2. add one wooden door
  3. undo the wooden door and walls of second story
  4. try to use the custom builder tool erase floor

Expected Results: To continue to design and build a building

Actual Results: Engine error

Notes: not in combat this time (see other bug reports)


Versions and Mods: A13 Develop-2720 (x64)

System Information:
Win 7 Ult 64 bit
Intel i5-3570k @ 3.40GHz
8gig DDR3 Ram @ 1866MHz
Nvidia GeForce GTX 770
Driver version 344.75
Resolution 1920x1080 @ 60HZ