FWIW, I dropped to a command line, used the xcopy command (with switches to make sure all folders and hidden files were included) to copy the entire contents of my 32GB card to my computer; then formatted my new 64GB card in my phone, took it out and let File Mgr. copy the original card's files over to the new one, popped it in my phone, and all is well. Note that I did not overwrite the three folders created on the new card when I formatted it. Works like it should.