Just dropping you a quick note that this is still happening in 1.0.6. Very cool mod concept, so I am excited to give it a go. I will disable for now as it crashes anytime I pull blueprint book out of the My Blueprints interface or import a new string. Hope you can get it working.
The mod Cargo Ships (1.0.6) caused a non-recoverable error.
Please report this error to the mod author.
Error while running event cargo-ships::on_player_cursor_stack_changed (ID 32)
BlueprintRecord cannot be read while it is a preview.
stack traceback:
[C]: in function 'get_blueprint_entities'
cargo-ships/logic/pump_placement.lua:77: in function <cargo-ships/logic/pump_placement.lua:76>
(...tail calls...)
cargo-ships/logic/pump_placement.lua:144: in function 'PumpVisualisation'
cargo-ships/control.lua:339: in function <cargo-ships/control.lua:337>