Fixed. Check github master.zip. A new version will release tomorrow.
@Henrik_Gregersen, Thanks for pointing out the issue. I committed to github master. A new version will release tomorrow.
I am re-checking.
This not an error FROM Anspress. Maybe some conflict with a plugin, so try to disable one by one. Also MAYBE a problem with Jetpack, if you have that installed and active. Or your theme ? (hint: go to your permalinks and SAVE them once)