I think the core problem is the size of the images. To do any channel
combining Paint Shop Pro and Photoshop first convert the JPEG to
a bitmap, which would be something like five times as big (over
100 MB). So you have to ask yourself- do I need that much resolution?
Probably not. Try converting to another format and then reduce the size
to about 1/3. At least that is what I'd do.
HB

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