it shows possible overlaps but I've checked them all and there are none. It's only because i'm coming from LOR and using all my LOR controllers with the same channels I had assigned in previous years shows. They tend to jump around a bit so xlights is just showing warnings to check. Besides, correct me if I'm wrong, but it's my understanding that xlights places effects against the model instead of the channels so overlapping channels shouldn't have an effect on the preview screen. Or am I completely wrong? LOL