Tried it again, and the line of missing tiles appears when the placement of space foundation stops underneath the pasted section in order to not created a hole in the ship.

Just noticed when you delete the bottom part of the ship (i.e. below the hub), there's a line of missing tiles that I did not intend to be there (not sure if that was my fault or something odd happened during blueprint placement).

Here's the save and the latest factorio-current.log

No crash, possible to unblock yourself if you know how. More of an inconvenience.

When rebuilding spaceships in orbit I got stuck when the spaceplatform had enough foundation to expand in one section, but somehow didn't do that because there was an inner gap that it couldn't finish deconstruction ...

The 1.0 release of Tycoon is finally here: https://mods.factorio.com/mod/tycoon

Cities are coming to Factorio! With Tycoon you can help cities grow by providing them goods from various supply chains. Enjoy the gameplay style of games like Transport Tycoon or Transport Fever, right in your favourite ...