Thanks to some good testing by some very helpful users, a bug has been identified with iPhoto2Gmail v 0.9. iPhoto2Gmail v 0.9 is not compatible with Java versions below 1.5, and therefore OS X 10.3.x users receive the error message:
Exit Code: 1 when trying to send an email.I have made the necessary changes so that the next public release of iPhoto2Gmail will restore compatibility with 10.3. I should note that, eventually, support for OS 10.3 will be dropped so that new features can be added.