How about a "temple" instead of a castle?
ok realy thats just a name change for me now cause I've not got blender down yet. (SO YOU CAN STOP POSTING FOR A CHANGE JUST FOR THAT!)
but If you realy want it changed just do this
go to where you have the folder then go to tech->(wherever you put it)->swift->units-> rename castle to temple or whatever then go in the file-> change text document that says castle to temple or whatever-> then go back to units go to worker open the text file with notepad or such and change these
<command>
<type value= "build"/>
<name value="build_basic"/>
<image path="images/worker_build_basic.bmp"/>
<unit-requirements/>
<upgrade-requirements/>
<move-skill value="move_skill"/>
<build-skill value="build_skill"/>
<buildings>
<building name="farm"/>
<building name="dojo"/>
<building name="blacksmith"/>
<building name="castle"/>
<building name="sacred_trainer"/>
<building name="hero_energy"/>
<building name="spirit_stealer"/>
<building name="dragon_nest"/>
</buildings>
<start-sound enabled="false"/>
<built-sound enabled="true">
<sound-file path="sounds/worker_work_end1.wav"/>
<sound-file path="sounds/worker_work_end2.wav"/>
<sound-file path="sounds/worker_work_end3.wav"/>
</built-sound>
</command>
to this
<command>
<type value= "build"/>
<name value="build_basic"/>
<image path="images/worker_build_basic.bmp"/>
<unit-requirements/>
<upgrade-requirements/>
<move-skill value="move_skill"/>
<build-skill value="build_skill"/>
<buildings>
<building name="farm"/>
<building name="dojo"/>
<building name="blacksmith"/>
<building name="temple"/>
<building name="sacred_trainer"/>
<building name="hero_energy"/>
<building name="spirit_stealer"/>
<building name="dragon_nest"/>
</buildings>
<start-sound enabled="false"/>
<built-sound enabled="true">
<sound-file path="sounds/worker_work_end1.wav"/>
<sound-file path="sounds/worker_work_end2.wav"/>
<sound-file path="sounds/worker_work_end3.wav"/>
</built-sound>
</command>
and do the same for the repair command that is at the bottom.