An updated version of the fan created Border Town Burning supplement is now available.
From their announcement:
The second edition of the Border Town Burning supplement for Mordheim is out now. The revised and updated version incorporates a number of corrections and clarifications based on player feedback during the last one and a half years since the initial release of this all original fan-made supplement. Both the full supplement download and the individual files have been updated. You can also find the various updates of the initial release listed in the Errata file.