I could not see the files in the file browser (since the file browser did not load) and had copied them using a Linux system (although later I copied some new photos off to a mac). But nevertheless by the end the file tree was corrupted with some missing files (moved but not copied?). In any case, I deleted the CHDK directory and recopied it from the Linux system life became much better.
Thanks for the quick responses. CHDK provides wonderful additions to my camera.