Manipulator WB (Aligner) does not work

[koluna]

OS: Linux Mint 18.1 Serena
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.16093 (Git)
Build type: Release
Branch: releases/FreeCAD-0-18
Hash: 690774c0effe4fd7b8d2b5e2fb2b8c8d145e21ce
Python version: 2.7.12
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: English/UnitedKingdom (en_GB)

Hi!
I want to align two objects: "Back1" by "Screw Nut housing Bracket". They are placed in the root of the tree now. I use Aligner and it does not work properly. Back1 is not moved or moved wrong.
Do You need my file?
Help me, please. It trouble kills me

[easyw-fc]

Hi!
I want to align two objects: "Back1" by "Screw Nut housing Bracket". They are placed in the root of the tree now. I use Aligner and it does not work properly. Back1 is not moved or moved wrong.
Do You need my file?
Help me, please. It trouble kills me

Yes, please post the file or a download link.
I'm going to havd a look at.
Probably you would need to check the hierarchy option.

[koluna]

Probably you would need to check the hierarchy option.

What did You mean?
Is it an option in Aligner? I never use this option - it does not work in my hierarchy. I move my objects with KiCad StepUp and try to align them with Aligner.

[koluna]

I am sorry for a long time delay!
Check my file, please. I use A2Plus, the main file is printer.fcstd.
Back1 should be aligned.

https://yadi.sk/d/l-nzQtcdY3Fksw