[Openflipper] Segfault after compiling OpenFlipper-Free with Qt 5.6

Hi, I just cloned the OpenFlipper-Free repository (https://www.graphics.rwth-aachen.de:9000/OpenFlipper-Free/OpenFlipper-Free.g...) and compiled it successfully (64bit Linux). However, when I try to run OpenFlipper, I immediately get a Segmentation fault. Could this be due to the fact that I'm using Qt 5.6 (there was a warning about this when running cmake)? If there's any other information I could provide, please let me know. Thanks, Pieter