Can't update "Quantity On Hand"

[Jeff]

OS: WIN7 X64
OPENERP: Version 7.0-20130729-231030
Warehouse Management: 7.0.1.1
browser: firefox 22.0

I'm new to openerp. When I create database, I choose "Load demonstration data".
Then I install "Warehouse management" and try to update "Quantity On Hand"
in Warehouse > Products > Inventory.

But screen show "OpenERP Server Error"

Client Traceback (most recent call last):
  File "C:\Program Files (x86)\OpenERP 7.0-20130729-231030\Server\server\openerp\addons\web\http.py", line 204, in dispatch
  File "C:\Program Files (x86)\OpenERP 7.0-20130729-231030\Server\server\openerp\addons\web\controllers\main.py", line
...
...
...

Server Traceback (most recent call last):
...
...
...
  File "C:\Program Files (x86)\OpenERP 7.0-20130729-231030\Server\server\.\openerp\osv\osv.py", line 185, in execute_cr
  File "C:\Program Files (x86)\OpenERP 7.0-20130729-231030\Server\server\openerp\addons\stock\wizard\stock_change_product_qty.py", line 70, in default_get
AttributeError: 'int' object has no attribute 'id'

[vmajor (victor-major)]

Will this be fixed in the nightly? I just updated to the latest nightly (7.0-20130730-231022) and the bug is still here.

[vmajor (victor-major)]

The bug is still present in 7.0-20130731-231106