This has happened in both my mine admin building and plantation admin building. Usually the first time I go into it in a session, I change it to coal or iron, input quality and input amount and hit execute; It comes up and says "you do not have enough power to produce diamonds" (the first thing in the mine production pulldown) ... same happens when trying to create wood in plantation admin building, it comes out as cotton (however, produces it because i do have enough) ...
Dunno wat the problem could be, but it could be fixed by using Buttons instead of a pulldown?
Admin Building Pulldown
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