[BUG] everything in simulation disappears when attempting to place a galaxy

[ArcticTroll]

(Images are large so I won't embed them.)

Started off with a regular solar system.
http://images.akamai.steamusercontent.com/ugc/367408984872632143/AFBB584876E27822888FFEEEBD3E01D31EA72D47/

About to place andromeda galaxy (Solar system has disappeared).
http://images.akamai.steamusercontent.com/ugc/367408984872632606/03727A93CE576343B0FFF74555533A6E57D27AA1/

Canceling the placement, everything still gone.
http://images.akamai.steamusercontent.com/ugc/367408984872632817/E82582E90776ECAE4E5C0626AC3D5DB4BFF19A1D/

[Plutonium]

It seems like if you zoom out and then place the galaxy nothing disappears. But I had some weird trace behaviour. 

[Jar]

Thanks for reporting. We fixed a few bugs with placing galaxies in the last update, but it seems like this is a pretty bad one which was not caught. I'll pass it along to the team.