you have an error in your mod your shipyard.lua form 150ish

too 250ish you nerver set up for server to spawn the base game ship when useing the ship yard please fix this.

While you are right that base game ships wouldn't spawn - with AdvShipyard on the main branch (beta was and is fine) -, your bug estamination was completely off.
The bug occured, because in the beta the playerindex has been added as a new parameter and that (in short) prevented the basegame ships spawning function from being called and hence not spawned in.
I've added the proper glue code for the main branch in the latest update

love the mod, but theres one feature i'd love to see, editable ship style seeds.