Hustle causes symbols and icons to not appear

Hi, need a little help here. This problem only came about after I upgraded to Hustle 2.0.2 – was fine on 2.0.1. All the icons became squares/weird characters. When I disable Hustle, the icons appears again. I've reverted back to 2.0.1 for the time being, but was wondering if there could be a fix for this?