MySQL Error 1067: Invalid default value for

Hello.

I have created a backup of a database
(mysqldump -h localhost -u root -p database_name > database_dump.sql)

Then I have updated my system from MySQL 4.0 to 5.0.45. I have created a clean OS install (centos 5.3 and mysql 5.0.45)

Since the old database wasn`t Utf-8 I converted it:
ICONV -f ISO-8859-2 -t UTF-8 database_dump.sql > database_dump_utf.sql

Then I `ve tried to import this dump:
(mysql -u root -p)
(create database database_name)
mysql -h localhost -u root -p database_name < database_dump_utf.sql

... but I get this error:
ERROR 1067 (42000) at line 10: Invalid default value for

For all others databases the procedure worked ok,

Thank you