That's what I'm looking at when I try to expand my buildings.You don't have enough material for this expansion.
You'll need the following material:
back
I was expanding 20+ buildings at the same time (admin building) and I did not have enough materials for all of them.
Those that had the materials started to expand, and I bought the needed materials and then tried to expand my remaining buildings, but now that message keeps popping up.
I have all the materials needed now, but for some reason it tells me that I don't.
relogging did not fix this.
Name: VerConMat Industries BV
ID: 316018
Realm: 2
Bug reproducable: Yes, 3 times before relogging, 1 time after relogging, then I stopped attempting to expand.