[Trunk] account_analytic_plan break the creation of inovice from analytic lines

Hello,

I installed account_analytic_plan, hr_timesheet_invoice module with latest trunk code.

I got an error:
1. draft invoice
2. Add invoice line with analytic distribution.
3. create the invoice
4. go to chart of analytic accounts
5. double click on Analytic account you will see the Analytic items
6. you can create invoice (invoice analytic lines), it give you the invoice created in list view..
7. double click on it.

  File "/home/mra/workspace/openobject-addons/account/account_move_line.py", line 905, in view_header_get
    res = _('Entries: ')+ (res[0] or '')
TypeError: 'NoneType' object is unsubscriptable

thanks
mra