thanx again warcow. sorry, but my project depends to be working in poser.
ur absolutely right whit your comment ´bout the differences.
the last 3 weeks i worked on finding a way to fix my problem.
i tryed any thoughtable ways to convert the files in programs like 3dmax maya softimage houdini motionbuilder a.s.on, with no results.
the only way i figured out in poser is to let simon (looks like a monkey in every pose an cam by the way) walk along a walk path which i edited to the railway. then i childed the locomotive to simons hip, deleted the frames for hip in animation tool and unhided simon body in properties tool.
now the locomotive actually follows the railway (tricked out poser, yeah).
but the shame is, cannot write an animated pose file for the locomotive, because logically the hip of simon has track nodes, not the locomotive.