Engine Error after loading current game

[Relyss]

There’s been some changes that broke backwards compatibility:

NEW BUILDER VERY UNSTABLE BRANCH O.o

NEW BUILD(ER) INCOMING! Changes changes changes… And some stuff will be backwards incompatible with old saves! Such is the prices of the new shiny. Stairs Tool revamp–more like the old one that ‘grew’ to where you pointed, but still pullable/pushable Buildings now “blow up” properly when destroyed, refunding 70% of invested resources (and 100% of placed items) Fixed a crash in topology service Hide fixtures appropriately in X-RAY mode Fix some “sticky” fixture placement Fix …