Just a FYI - Within the "Wiki" Plugin, in "Wiki Settings" (within WP 3.9.1), it displays "Upgrade now" verbiage. Clearly I am a paid subscriber, however the verbiage displays. Additionally, the "Upgrade now" hyperlink directs users to the MarketPress eCommerce plugin page. Something strange going on there. No worries for me, just a little feedback on a minor bug. I included a screenshot for you also.