Describe the bug
Make sure to include:

1. What did you expect to happen? absolutley nothing

2. What actually happened instead (i.e. what was the bug) CTD
   latest.log

3. If it was a crash, upload the full log file (latest.log)

4. If they would help to explain the issue, include screenshots

To Reproduce
Attention to detail is important!

1. Do '...' open the game
2. Then do '...' without facing a block press v with an item in hand

This looks like a bug in TFCTech (i'm it's dev). Are you using the latest, 1.0.2 version?

yes

I can't reproduce with just TFC. Nor does that crash have anything to do with placed items, or TFC at all.