[0.12.29] Blueprinting connected lights crashes the game

[Tev]

1. place the blueprint I have in toolbelt ("LC-5" lights) right away.
2. Deconstruct the "5" except it's top line (4 lights) - I tried blueprinting some part of the "LC-5" right away, but nothing happened. However after I deconstructed something bug worked again!
3. Blueprint first three (from the left) lights left in the "5". EDIT: tried different three lights, still crashing.
4. ???
5. Crash!

Screen from the frozen game: https://gyazo.com/e865f62f284c2eac211f86d1a5c5327f
Save: http://uloz.to/x5byidSm/blueprintbugormaybefly-zip

I don't know how important it is, but I have blueprint selected in my hand in the save, and it's connected to contstant combinator sending one signal.

[Rseding91]

Thanks for the report. This is now fixed for the next version.