I've attached two save files where routes going through Hamburg are calculated incorrectly in Rails 1.8.7.
In the first one, the company running London-Hamburg-Berlin is incorrectly given a red-to-red bonus despite the route not ending in a red on both ends.
In the second a company running London-Hamburg-Warsaw with 4 tokens is given a 360(!) red-to-red bonus instead what I believe is the correct 120. It's almost as if the bonus is given for all 3 distinct pairs of red-to-red on the route.
(Adding second attachment).
In Rails 1.7.12 the save files work file.
Some of the changes in the Rails 1.8.x branch for 1880 must have caused this bug. I will check the bug in Rails 2.0 with the revised 1880 implementation.
So the workaround is to downgrade to rails 1.7.12 for playing 18EU. Or wait for rails 2.0 ;-)