Thanks for this bug report, however I'm not sure I am able to
reproduce this error. When I try writing to the specified JPEG,
I get the following:
exiftool a.jpg -exif:xresolution=1
Use of uninitialized value in numeric eq (==) at lib/Image/ExifTool/Writer.pl line 3076.
Error: Corrupted JPEG image - a.jpg
0 image files updated
1 files weren't updated due to errors
It doesn't hang (or even crash), but it does produce an unwanted run-time
error that could be avoided. I have prepared a 6.58 pre-release version which
avoids this error and uploaded it
here.
If this solves your problem, great. Otherwise, please give me a more specific
example of what the command line that is giving you problems and I should
be able to sort it out.
- Phil