Ubuntu Tweak 0.5.4-1 crashes immediatly upon startup.

[Zyonin]

When starting Ubuntu Tweak 0.5.4-1 (installed from ubuntu-tweak_0.5.4-1_all.deb package on Launchpad) this dialog pops up:

"Oops... a fatal error occured

Ubuntu Tweak needs to turn off..."
<< rest of message snipped as it pertains to reporting the problem >>

Traceback from the error reporting system:

Traceback (most recent call last):
  File "/usr/bin/ubuntu-tweak", line 109, in <module>
    from ubuntutweak.mainwindow import MainWindow
  File "/usr/lib/python2.6/dist-packages/ubuntutweak/mainwindow.py", line 142, in <module>
    MLOADER = ModuleLoader(modules.__path__[0])
  File "/usr/lib/python2.6/dist-packages/ubuntutweak/modules/__init__.py", line 27, in __init__
    package = __import__('.'.join([__name__, module]), fromlist=['modules'])
  File "/usr/lib/python2.6/dist-packages/ubuntutweak/modules/shortcuts.py", line 32, in <module>
    from compiz import CompizSetting
  File "/usr/lib/python2.6/dist-packages/ubuntutweak/modules/compiz.py", line 63, in <module>
    class CompizSetting:
  File "/usr/lib/python2.6/dist-packages/ubuntutweak/modules/compiz.py", line 64, in CompizSetting
    if module_check.has_ccm() and module_check.has_right_compiz():
  File "/usr/lib/python2.6/dist-packages/ubuntutweak/common/systeminfo.py", line 77, in has_ccm
    import ccm
  File "/usr/lib/python2.6/dist-packages/ccm/__init__.py", line 1, in <module>
    from ccm.Conflicts import *
  File "/usr/lib/python2.6/dist-packages/ccm/Conflicts.py", line 27, in <module>
    from ccm.Constants import *
  File "/usr/lib/python2.6/dist-packages/ccm/Constants.py", line 88, in <module>
    locale.setlocale(locale.LC_ALL, "")
  File "/usr/lib/python2.6/locale.py", line 513, in setlocale
    return _setlocale(category, locale)
Error: unsupported locale setting

This is on a fresh 10.04 LTS installation of which no changes have been made. I tried launching Ubuntu Tweak after killing off Compiz (as there seems to be some issue with UT and CCM if I am reading the error report correctly and I get the same error.

Launching from the terminal results in this in the terminal:

 Using the fallback 'C' locale.
ERROR:dbus.proxies:Introspect error on :1.95:/com/ubuntu_tweak/daemon: dbus.exceptions.DBusException: org.freedesktop.DBus.Error.AccessDenied: Rejected send message, 1 matched rules; type="method_call", sender=":1.111" (uid=1000 pid=5111 comm="/usr/bin/python) interface="org.freedesktop.DBus.Introspectable" member="Introspect" error name="(unset)" requested_reply=0 destination=":1.95" (uid=0 pid=3366 comm="/usr/bin/python))