This is a common problem.
If you go to this form there are a lot of bugs explained and how to solve this.
SOLUTION
First try this: Just update SPS (in Simba) and restart Simba.
If this is not working; do this:
So as you can read on the last page, all you have to do is this:
http://villavu.com/forum/showpost.ph...&postcount=253



Nope!
Chuck Testa









That's not really as clear in the form, though. So basically for mining, if you have copper, iron, and coal selected in the form, you'd set up priority like this:
