Everything's loads ok, and then – an Error

Hi,
I recently switched a theme to ENFOLD.
Now, pages with latex are loaded ok, when they still load (I mean when the grey rectangle at the bottom is still showing), but when it finishes loading – I get:
[Math Processing Error]

Example can be found here

Browser is IE 10, and I tried emptying the cache etc.

Thanks a lot,
Eran

https://www.ads-software.com/plugins/latex/