Yup, I fixed that bug in "bastardized" version of that mod friend of mine and I use, so it was very simple to migrate fixes over to original build.
Changelog:
-Tentacle Arm pickups no longer throw an exception
-Collision Boxes are no longer added between CyberChest and attached to it Assembly ...

new bug, I have 2 chest in my map and this one just popup every like 15 min of play when that function is called.

http://i.imgur.com/lnQ75mt.png?1

Looks like bug in in Tentacle Arm module, I'll take a look at it, I think I already fixed that bug on my test build, and couple more along the way ...

Here is an unofficial hotfix for the previous version. I am not affiliated with the author, but a guy who wants to have fun.

every direction work but the right one.. if you try to select the right assembler it does nothing.<

I'll take a look at it after work.

Still getting this error with the latest version of the game :(

Not original poster, but have been working today on fixing this mod to play with my friend, this update is not under any permissions from author .
I have advanced build number to V.0.10.1 as I used github V.0.10.0 for the base.
again ...