Hello, yes this was my mistake when collecting the darks. It is very easy with this camera to forget to set it to Darks as it has no shutter system. The frames are still dark frames but do show a filter name in the fits header as light frames.
If you are using an automated calibration and stacking some software will get the darks and light frames confused. This can be easily fixed by renaming in the fits header. Highlight the offending name, fill out the correct information and click replace.
Hope this helps you