Hi there!
first of all, great plugin.
Unfortunately we have slightly the same problem on this site http://industryplanner.com/events/2015-09/ If you go to oktober of november the page is not loading. All the 2015-0[n] will load but the 2015-1[n] do not load.
here is a ‘succes’ issue in the inspector. img: https://www.dropbox.com/s/v4fzzpgh71ad7l0/Schermafbeelding%202015-07-20%20om%2013.41.31.png?dl=0