Q:
Cant purchase upgrades
A:
Upgrades require supply. For a caravan, you will require 100 supply in the depot before you can order each of the first two upgrades, and then you will require 150 supply for each of the final two upgrades.
In Keeps / Towers / Castles, you can order structural upgrades without the needed supply already in the depot, but workers will take supply and use it to complete the upgrade until a sufficient amount of supply has been used. However, personnel upgrades require the full amount of supply (similar to supply camps) before you can order them.
Thanks, I think you figured that out. The interface on that is kind of weird, I was thinking it was a karma issue.
Yeah, the interface makes it look like you need karma, when it is actually supply and $$ you need. Only the highest level upgrades need karma.
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