James, the nightly pakset fails to open because of road/way problems.
May I ask to which pakset you are referring? There are two paksets (Pak128.Britain-Ex and Pak128.Sweden-Ex) on the nightly server, and you have posted this in the Simutrans-Extended development subforum, not the subforum for a specific pakset.
Edit: I have fixed a makeobj problem on the server that was responsible for an incomplete pakset build; can you check whether this now works correctly?
Its fixed and it was Pak128.Britain-Ex-Nightly.