Comment 0 for bug 1048045

When attempting to concatenate scanned PDF files, the following error message is displayed:
PDFTK returned error!
Input/Output Error
Error code: 256

I was able to successfully concatenate the same files using pdftk via the command line, so I don't think the problem is with pdftk.

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lsb_release -rd

Description: Ubuntu 12.04.1 LTS
Release: 12.04

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apt-cache policy pdfchain
pdfchain:
  Installed: 1:0.3.3-1
  Candidate: 1:0.3.3-1
  Version table:
 *** 1:0.3.3-1 0
        500 http://mirror.cs.umn.edu/ubuntu/ precise/universe i386 Packages
        100 /var/lib/dpkg/status

Steps to repeat:
Launch PDF Chain application
On Concatenate tab, click [Plus] [+] button to add two or more PDF files
Click "Save As" button
Give filename and click save

Expected:
Message saying something like "PDFTK returns success"

Instead received following message:

PDFTK returned error!
Input/Output Error
Error code: 256

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: pdfchain 1:0.3.3-1
ProcVersionSignature: Ubuntu 3.2.0-29.46-generic-pae 3.2.24
Uname: Linux 3.2.0-29-generic-pae i686
ApportVersion: 2.0.1-0ubuntu12
Architecture: i386
Date: Sat Sep 8 17:35:02 2012
ExecutablePath: /usr/bin/pdfchain
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: pdfchain
UpgradeStatus: No upgrade log present (probably fresh install)