Thread:CMONYALL/@comment-5709722-20130701183618/@comment-3991817-20130701185446

What is the problem they seems to be causing? I can see the Merchant's house has successfully been added to the World Wonder category and Albrecht's Workshop is in multiple categories even.

Or did you want to add the Gems page to the Albrecht's Workshop category (so the other way around)? Maybe the problem was that such a category does not exist?