Are you getting any error message?
Have you tried holding down the ctrl key (Cmd on Mac) whilst clicking the import button which should change to “import From”
That should bypass the Add Photos screen which can also be turned off in Preferences >> General
When the import dialog opens directly can you click the folder icon (top left) to navigate to your folder or storage card?
unable to import raw files from Canon 5D Mark III.
What exactly happens when you try?
Hi John. Thanks for your interest. Issue now fixed it seems