Why can I not couple a Class 150 DMU with a class 150 DMU.
This was an error in the dat files. Did someone copy over a whole load of experimental dats over the standard ones? There's more than a few errors in the dats now as well as lots of experimental information. I already had to fix 104/117/120/128 series coupling - I've just committed fixed versions of 15x series now to SVN too.
I may have done that although the 150 dats (and a few others) originally appeared in experimental so I just copied the dats from there - experimental only stuff can normally just get ignored by standard makeobj. Thanks for commiting all these and other things to standard svn recently btw!