I previously tried importing the project directly from MBED and get problems described in another forum post.
This time I created a GitHub repository. It looks ok in GitHub with the files loaded in and committed. Then I tried importing that repository into Keil. A Keil project is created with the imported files showing, but they are greyed out and I get the message "Cannot set "<my projet>" as Active Project as it is not recognized as a valid project."
Help would be most appreciated! Al