Hi,
Thank you very much for this awesome plugin. However, I am facing a strange issue. After some debugging, I have found that piklist loads my plugin before set_current_user hook is fired. In other word, I get error while using WP_Query class in my plugin file because user is not set. And it happens only when Piklist supported is added to my plugin and piklist is active. For detailed problem, please check the issue I opened on github. Thank you very much for your help.

https://github.com/piklist/piklist/issues/124