Now I have compiled it successfully and it works! With the branch lp:~robert-ancell/simple-scan/fix-pdf-trailer the pdf opens in acroread without warning. I have finally used valac-0.20 because using valac-0.16 like it says on the README.md failed with the error I said.
Thank you for fixing it! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1220826 Title: PDFs of scanned documents are incompatible with Adobe Reader To manage notifications about this bug go to: https://bugs.launchpad.net/simple-scan/+bug/1220826/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs