Strange Deep sky stacker output

[dark knight]

Hi all, I'm using a Canon 6d attached to my esprit 120. I  captured a few trial shots the other night of the m31 via ekos|kstars  where they looked good individually as they came into the viewer. I then stacked them in dss and noticed the strange histogram.  Upon loading the stack into ps for processing the image of m31 was just a fuzzy kind of blob. Any help much appreciated. 

[ONIKKINEN]

Did you use kappa-sigma clipping? I had a case where DSS decided to stack all of my frames to a single frame that was nothing but clouds and startrails, the resulting image came up pretty much empty. Turns out kappa-sigma clipping just rejected almost all pixels.

Try using the average setting in the lights tab to see if something funny is going on.