Import partners

Hi,

I created a import csv for partners. This is the header:
name; active customer; collaborator ;property_account_receivable ;property_account_payable
The cvs afile has 5 records, there is no empty cell.
But when i want to import i get this message :"File "/opt/openerp-6.1/openerp/addons/ea_import/ea_import_template_line.py", line 159, in get_field
    IndexError: list index out of range"
Is my cvs file not well formated?
Untill now i succeded to import accounts, journals..