Hello, i use the script QSC_Preprocessing to stack my images. Camera is a QHY268C with a resolution of 6280x4210 pixels. From the datasheet >>> Effective Image Area
6280*4210 (includes the optically black area and overscan area) <<< I think the software has a problem with this.
Flats, Bias and Dark-Frames stacking is ok. When it goes to the light frames the script aborts with the message >>> Stacking: not all images in the sequence have the same size <<<
ASTAP and AstroPixelProcessor have no problem with this.