[Eric] i can't configure eric4

[luigi curzi]

i'm trying to configure eric4; 
when i click on "style" ("stile" in italian) i receive the error below
and, if i close eric4 and try to re-open it, i receive this error in
console:

luigi at pozzaibe:~$ eric4
Warning: translation file 'qt_it_IT'could not be loaded.
Using default.
Warning: translation file 'qscintilla_it_IT'could not be loaded.
Using default.
QVariant::load(QDataStream &s): type  unknown to QVariant.
Abortito

i can re-run it only after deleting "~/.config/Eric4", but anyhow i can't  configure "style".
i run a debian testing updated with last eric4 snapshot.

Warning:
An unhandled exception occurred. Please report the problem
using the error reporting dialog or via email to <eric4-bugs at die-offenbachs.de>.
A log has been written to "/home/luigi/.eric4/eric4_error.log".
Error information:
--------------------------------------------------------------------------------
2009-04-21, 17:06:43
--------------------------------------------------------------------------------
<type 'exceptions.ValueError'>: 
list.index(x): x not in list
--------------------------------------------------------------------------------
File "/usr/lib/python2.5/site-packages/eric4/Preferences/ConfigurationDialog.py", line 429, in __showConfigurationPage
self.showConfigurationPageByName(pageName)
File "/usr/lib/python2.5/site-packages/eric4/Preferences/ConfigurationDialog.py", line 463, in showConfigurationPageByName
page = self.__initPage(pageData)
File "/usr/lib/python2.5/site-packages/eric4/Preferences/ConfigurationDialog.py", line 444, in __initPage
page = mod.create(self)
File "/usr/lib/python2.5/site-packages/eric4/Preferences/ConfigurationPages/EditorStylesPage.py", line 361, in create
page = EditorStylesPage()
File "/usr/lib/python2.5/site-packages/eric4/Preferences/ConfigurationPages/EditorStylesPage.py", line 53, in __init__
self.foldStyles.index(Preferences.getEditor("FoldingStyle")))
--------------------------------------------------------------------------------
Version Numbers:
Python 2.5.4
Qt 4.4.3
PyQt4 4.4.2
sip 4.7.9
QScintilla 2.2
eric4 4.4-snapshot-20090419 (r3045)
Platform: linux2
2.5.4 (r254:67916, Feb 17 2009, 20:16:45) 
[GCC 4.3.3]
--------------------------------------------------------------------------------
Plugins Version Numbers:
PluginAbout 4.4.0
PluginEricapi 4.4.0
PluginEricdoc 4.4.0
PluginSyntaxChecker 4.4.0
PluginTabnanny 4.4.0
PluginVcsPySvn 4.4.0
PluginVcsSubversion 4.4.0
PluginVmListspace 4.4.0
PluginVmMdiArea 4.4.0
PluginVmTabview 4.4.0
PluginVmWorkspace 4.4.0
PluginWizardPyRegExp 4.4.0
PluginWizardQColorDialog 4.4.0
PluginWizardQFileDialog 4.4.0
PluginWizardQFontDialog 4.4.0
PluginWizardQInputDialog 4.4.0
PluginWizardQMessageBox 4.4.0
PluginWizardQRegExp 4.4.0
-- 
~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*
Io sono 
lo sbaglio, il momento di confusione, l'inopportuno

		Non sono niente.
	      Non sarò mai niente.
	Non posso volere d'essere niente.
A parte questo, ho in me tutti i sogni del mondo.

					F. Pessoa
~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*