POS[trunk] Update throws error

[Savvas Christofides]

With fresh installation of 6.1, install pos
take the new trunk module of point_of_sale that is on 27AUG12
and replace the folder in addons
Click on update module for Point of Sale
Update throws error
openerp ValueError: No such external ID currently defined in the system: account.model_account_journal_cashbox_line
Now, whenever I try to log in I get the warning
openerp ValueError: No such external ID currently defined in the system: account.model_account_journal_cashbox_line

[Ravish(OpenERP) (rmu-openerp)]

Hello Savvas,

I have checked your issue.But due to major change in trunk version.
It may possible that new version(7.0) addons will not completable with stable_6_1 version . As for POS, you can check it with http://runbot.openerp.com/ . it is not bug .SO cant validate it

Thanks for reporting..!!