When clicking on "build new iron mine" all my iron mines disappear and am unable to construct new ones. I can still see the buffs (irma feasts) running on missing mines and worker animations. All iron mines are level 3 or 4 and all other buildings (non-mines) are buffed with Grilled Steak.
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Additionally, when visiting a friend I get many building errors and then cannot see those buildings on his island or on mine, once I return home
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other errors I did not take screen capture of are;
building_lib/b_forester_realwood[1_0].png
building_lib/b_ProvisionHouse[1_0].png
building_lib/b_mason[1_0].png
building_lib/b_mason_marble[1_0].png
building_lib/b_longbowmaker[1_0].png
building_lib/b_blacksmith_iron[1_0].png
building_lib/b_forester[1_0].png
building_lib/b_bowmaker[1_0].png
building_lib/b_toolmaker[2_0].png
building_lib/b_stable[1_0].png
building_lib/b_sawmill[2_0].png
Here's a shot of what my island looks like after returning from friends island;
http://prntscr.com/8nhpn2