I am using the Allegiance Update Beta 2 i.e. [allegiance_1] in steam betas.
Crashes to desktop at end of turn. Appears to be when a Centish navy sails north on the eastern edge of the North Sea. It gets right against the boundary and then crashes.
With the attached save file just end the turn.
Details of any solutions that have already been attempted:
Have tried loading and ending the turn multiple times but the crash is consistent.
Tried manipulating the AI to not make that move but am already out of movement so limited options.
EDIT: Added clarification on build.