crash vendor/customer payment form when new

[Cristian Salamea]

Hello, in fresh installation for payment in trunk at revno 4121 for addons try this:
Create an vendor invoice
Validate invoice
Open Vendor Payments
Click on New Button, then crash and get this error: http://bit.ly/c2zTGL

[Cristian Salamea (ovnicraft)]

using account_voucher module

[Cristian Salamea (ovnicraft)]

Working with pdb at screen.py#540 line i found the xml crashing is this: http://bit.ly/c6jBJC from lxml-dev list support says:

attrs=\'{\'readonly\':[(\'state\',\'=\',\'valid\')]}\'

should maybe be

attrs="\'{\'readonly\':[(\'state\',\'=\',\'valid\')]}\'"

i want to confirm if thats created in account/account_move_line.py#950 line

 attrs.append("attrs='{'readonly':[('state','=','valid')]}'") if yes it must fixed

[Cristian Salamea (ovnicraft)]

Fix released at revno #4053