Hi Phil

We managed to get exiftool to hang whilst writing to a corrupt JPEG...

The JPEG which was ONLY 2 bytes long

\377\330

...Not quite sure how this occurs and we will improve our error checking so that this image is rejected before it gets to ExifTool...

However....

If exiftool comes across such an image and you try and modify it's contents then it will hang indefinately...

exiftool will correctly identify this as an invalid file if you try and read the tags.

Mark