Peasent cannot build?

I am working on a map where some of the buildings have their model files replaced by buildings. Most of the time the peons that are building can build ok, but sometimes they aren't able to build at all. They can be ordered to build the building, and they will move to the building site, but then nothing happens.

Any ideas what might be causeing this or how to fix it?

peasant: i will goto sleep!
peon:that's good idea! wait for me.

Akiross: Wow, now that was a stunning display of intellect. Salutations, good sir.

Mink: Not sure... what exactly does the game say to you when the "peasant cannot build at all"?

I think there is some kinda of weird function that will not allow peasants to build unless they also have repair as an ability. This is due to the way humans were designed by blizzard. Just add repair ability and see if that works.

A couple things you should check is make sure the race is the same, and it has the repairing ability for that race. Also, make sure the build time isnt at 0.

FyreDaug is correct, the #1 cause of peons unable to build is if the buildings race is not the same as the peon.

Also, if your building & Peons are Human, then the Peon MUST have the repair ability (also like fyredaug said).

Thanks, I will look into it. I know the races are the same but I am not sure about the repair ability. Thanks for your suggestions.