I have experienced the same problems as noted above. Here is what I did to work around.
1. I installed the imagemagick-6.5.8.3 source package, generated the .deb using prevu, and installed the resulting package on Karmic Koala on an amd-64 PC. My packages have version number 6.5.8.3-1~9.10prevu1. 2. I ran gscan2pdf with the new package and experienced the same hanging at 50% on saving to PDF. 3. I deleted my ~/.gscan2pdf file and re-ran gscan2pdf. This time, I was able to save successfully to PDF. Interestingly, the progress dialog on saving still hung at 50% but then very rapidly concluded the action and disappeared. 4. Note: on scanning lineart, there is no compression and indeed no choice for compression other than "none". On scanning grayscale, I chose no compression again. In sum, changing the imagemagick suite to the latest on the Debian/Ubuntu source repositories and removing the old ~/.gscan2pdf file did the trick. I am happy to provide more information if I am told what to send. I would love to see this bug squashed: gscan2pdf is such a good package. Thank you for your efforts. -- locks when trying to save as PDF https://bugs.launchpad.net/bugs/424249 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs