tried to mount my estern peasant. I followed the tutorial http://www.twcenter.net/forums/showthread.php?t=33574
and did this

In descr_model_battle
I edited the line
skeleton fs_spearman
to
skeleton fs_hc_spearman

and in the export_descr_unit
i added

mount light horse
mount_effect elephant -8, camel -4

so that

class light
voice_type Light_1

became

class light
mount light horse
mount_effect elephant -8, camel -4
voice_type Light_1

where did I go wrong??