I have run the tutorial completely and had no problems with the software working. However, when I imported my own .mrc still images from a pre-existing dataset, the program doesn't seem to like it. It will calculate CTF values, but when I move on to particle selection and select the preview button, the GUI crashes giving a Master Socket Disconnect and segmentation fault error. I'm not sure if this is an issue with cisTEM or if it just doesn't like my images. Is there a straightforward way to diagnose this?