apport-retrace crashed with IOError in _search_contents(): [Errno 2] No such file or directory: u'~/.cache/apport/retrace/Ubuntu 12.04/Contents-i386.gz'

Retracing locally a crash, I got this apport crash, detected by apport himself ;)

TEST CASE:
1. On a fresh system (or remove the directory $HOME/.cache/apport/retrace/)
2. Use an existing crash file or create a new one and run the command:
  $ apport-cli /path/to/crash_file.crash
2.1 To the question:
    "Send problem report to the developers?"
reply
    "E: Examine locally"

2.2. To the question
    "This will launch apport-retrace in a terminal window to examine the crash."
reply
    "3: Update [...].crash with fully symbolic stack trace"

ACTUAL RESULT:
This crash

EXPECTED RESULT
apport proceeds with crash retracing.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: apport-retrace 1.91-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-15.24-generic-pae 3.2.5
Uname: Linux 3.2.0-15-generic-pae i686
NonfreeKernelModules: nvidia
ApportVersion: 1.91-0ubuntu1
Architecture: i386
CheckboxSubmission: c4273c0f4f2b8d26cd6bf31cadfd2912
CheckboxSystem: a871981cb5bdf4d6ebd55be46becf77e
Date: Thu Feb 16 01:18:43 2012
EcryptfsInUse: Yes
ExecutablePath: /usr/bin/apport-retrace
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/apport-retrace -S system -C ~/.cache/apport/retrace -v --gdb /var/crash/_usr_bin_nautilus.1000.crash
ProcEnviron:
 LANG=fr_FR.UTF-8
 LANGUAGE=fr_FR:fr:en_GB:en
 SHELL=/bin/bash
 PATH=(custom, no user)
PythonArgs: ['/usr/bin/apport-retrace', '-S', 'system', '-C', '~/.cache/apport/retrace', '-v', '--gdb', '/var/crash/_usr_bin_nautilus.1000.crash']
SourcePackage: apport
Title: apport-retrace crashed with IOError in _search_contents(): [Errno 2] No such file or directory: u'~/.cache/apport/retrace/Ubuntu 12.04/Contents-i386.gz'
UpgradeStatus: Upgraded to precise on 2008-10-18 (1215 days ago)
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