ocrfeeder crashed with AttributeError in expanduser(): 'NoneType' object has no attribute 'startswith'

[Nocchy]

It crashed when I try to import the image

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: ocrfeeder 0.7.7-1
ProcVersionSignature: Ubuntu 3.2.0-9.16-generic 3.2.1
Uname: Linux 3.2.0-9-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.90-0ubuntu2
Architecture: amd64
CrashCounter: 1
Date: Tue Jan 17 15:34:21 2012
ExecutablePath: /usr/bin/ocrfeeder
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20111128)
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: python /usr/bin/ocrfeeder
ProcEnviron:
 PATH=(custom, no user)
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
PythonArgs: ['/usr/bin/ocrfeeder']
SourcePackage: ocrfeeder
Title: ocrfeeder crashed with AttributeError in expanduser(): 'NoneType' object has no attribute 'startswith'
UpgradeStatus: Upgraded to precise on 2012-01-13 (3 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Antonio Censi (accensi)]

The bug still happens in ocrfeeder 0.7.7-2

[Antonio Censi (accensi)]

This bug is already detected and corrected upstream (although I found in the hard way, by debugging the code).

Comitted for 0.7.8

http://www.igalia.com/nc/work/project/item/ocrfeeder/

Fix Unpaper issue due to an unexisting variable gb#668027
There was a temporary_dir varibale that was left unchanged when the configuration started using TEMPORARY_FOLDER.
Thanks to Buganini Q for reporting and posting the fix.
Joaquim Rocha05/03/2012

As a temporary fix change in lib.py, routine unpaperImage at line 133
tmp_dir = configuration_manager.temporary_dir
to
tmp_dir = configuration_manager.TEMPORARY_FOLDER