The EXIF information in your JPEG image is corrupt.

ExifTool will not rewrite EXIF information which has such a severe problem due to the high probability that information will be lost. However, you can use exiftool to repair the file. Here are the steps:

1) Make a copy of the JPEG image (let's call it "new.jpg").

2) use "exiftool -exif:all= new.jpg" to remove all EXIF information.

3) use "exiftool -tagsfromfile 20050910-8582.jpg -all:all new.jpg" to copy any recoverable information from the original image (we know at least one tag won't be copied because of the invalid format code, but if you are lucky the rest of the information may still be good).

4) now go ahead and copy your CR2 tags to "new.jpg".

- Phil