can't build in captured sectors?

I have defeated all the bandit camps in 3 sectors but I can't build anything other than a garrison? I am level 21, and I have building licenses available...what am I doing wrong?? Or is it a fault? :confused: sorry if this is in the wrong discussion. :o

You need to build a storehouse in the newly conquered sector first.

I've tried, but it won't let me!!

Oops! Very embarrassed...realised I was trying to use the mason rather than the storehouse...silly me! Thanks anyway!!