The fact that you can reproduce this with the scanimage frontend tells me that this is a problem with Epson SANE backend, and not with gscan2pdf. If you look at the bottom the last log you posted, you will see that this is the command gscan2pdf used:
scanimage --device-name='epkowa:interpreter:001:005' -x 210 -y 297 --adf-mode='Duplex' --resolution='200' --batch --progress --batch- start=1 --batch-increment=2 Please try this from the command line and confirm that it throws the same error. If so, this bug should also be attached to the libsane package, where the epson and epson2 backends are. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/844582 Title: "Invalid argument" when trying to scan To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gscan2pdf/+bug/844582/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
