[Koha] Problem adding book with non ascii characters in title

[Jarosław Prokopowski]

Hello Friends,

I want to use Koha for our Dhrama center's library.
I have installed Koha version 3.01.00.037 (from git)  on Debian Lenny
with no problems.
Configuration:
- MARC21
- Zebra on
- Database has UTF8 encoding

When i'm adding a book without polish characters everything is fine
but when i try to add a book with some polish character (non ascii)
following error appears in the web browser:

--------------------------------------------------------------------
Koha error

The following fatal error has occurred:

Wide character in null operation at
/usr/share/perl5/MARC/Charset/Table.pm line 96.

ApacheServer version: Apache/2.2.9 (Debian) Server built: Jul 14 2009 20:03:28
Koha3.01.00.037
Koha DB3.0100037
MySQLmysql Ver 14.12 Distrib 5.0.51a, for debian-linux-gnu (i486)
using readline 5.2
OSLinux belzebubek 2.6.26-2-686 #1 SMP Sun Jun 21 04:57:38 UTC 2009 i686
Perl5.010000
------------------------------------------------------------------

Can you please help me to solve the problem?
Greetings
Jarek