[graham.hobart (Graham stevens)]

Hi folks, I have downloaded a trial copy of APP and whilst I like it I have run into an issue. I was just trying to stack LRGB fits-
I integrated the separate channels successfully and ended up with some stacks, but when I try and add channels in the tools/combine RGB i get a file size not compatible message -despite me using the same routine for each file.
Help please-there seems to be two files -a fits. and an ST.fits version in the list.
Graham