Cannot open multiple RAW images from folder

Thanks for these tips. Sadly, the solutions offered didn't solve my problem. I'm having the exact same issue as the OP.

Opening via File>Open is the only way I've been able to open the two photos I need in RAW together. Otherwise one opens, and the other doesn't open until I close the first. They're in the same folder. They're both .ARW files. But one was taken at a much more recent date (Photos from the original photoshoot will open together in RAW, but the newer photo will not).

If you have any more solutions to offer, I'd love to hear them. I've reset RAW preferences, restarted the computer, and tried opening by dragging onto the icon as suggested. Nothing made a difference. Thanks in advance!