Hi Tony,
When selecting the Star Alignment reference image type - View or File, the file option in not shown although the drop down window expands to show View or "white space"
Hmm, this is weird. I can't reproduce this problem. Could you please post a screenshot where this happens, so I can try to identify the cause?
If a view is selected and the view is also one of the added files the Alignment routine fails eventually.
Yes, this is a known problem with the latest version of StarAlignment. I'll fix it in the next version.
So you cannot align all your image files unlike the windows version.
Does this mean that you're seeing this problem on a specific platform (Linux or Mac OS X) and not on Windows?
You can align all of your images. Just take the precaution not to include your reference image (view or file) in your Target Images list. As I've said this won't happen anymore in the next version.