Hi, I was able to fix my error by having a look at the source code, however the actual fix was to edit my .img file. It had 483 slides but in the header it said it were 484, so the programm tried to dereference a null pointer. I changed the entry of the header to 483, now it works. I don't know how the incorrect number made its way into the file though. Maybe the cause is something else that may or may not need investigation. Probably a fail safe should be put into place to alert users of their incorrect...
segfault when importing img file