Saved game:
http://dl.dropbox.com/u/11646818/s2.sve (http://dl.dropbox.com/u/11646818/s2.sve)
Steps to reproduce:
Go to "Line management".
Select any line.
Error message:
simutrans-exp-2011-10-28-a02241a: gui/components/../../tpl/vector_tpl.h:99: uint32 vector_tpl<T>::index_of(const T&) const [with T = short unsigned int]: Assertion `false' failed.
Aborted
Thank you for the report. This shouldn't happen, however, as the release builds should not have assertions enabled; unfortunately, I don't control the Linux build process. I shall disable this particular assertion for the next release. Apologies that you are having trouble.