In the Preferences screen, there's a page full of 'Post capture options' to choose from. Most likely you've set one of the options there that's causing this behavior, maybe a Commandline tool?
-Ath
Thank you for your response.
Yes, I felt sure it must be on that list too but I have already studied the Capture and Post Capture options and did not see it.
I should mention it happens when using the "Save Image As" button on the post capture pop-up dialog. After you select the folder and save it, the file manager pops up. I can't find any way to stop the file manager from launching after it saves, but unless my memory is failing (which is possible) I could swear I once had it set so it did not do that and changed it... some years ago.
I don't think it has to do with a command line... can probably rule that out.