Hello, I've installed Odoo 8 in EC2 amazon and I have a problem every time that I try install a standard module that load a lot of data in the database, like l10n_es for Spain that upload all accounts for Spain. The system is loading the accounts but after 10 minutes I get a warning error (Constraint Error Tax Name must be unique per company! )  in the screen that stop the installation of the module and the log show the error

IntegrityError: duplicate key value violates unique constraint "account_tax_name_company_uniq"

DETAIL: Key (name, company_id)=(S_IVA21, 1) already exists.

2015-03-29 20:59:05,253 27994 ERROR openerp.http: Exception during JSON request handling.

These error only happend in Amazon in Debian and Ubuntu operating system. I've installed Odoo 8 in other VPS with the same operating system and works fine. I've tried it a lot of times creating a new instance every time and always have the same problem.

After this error all Odoo 8 seems to work properly but I'm not sure if all data account swere uploaded or I will have problem in a future.

Note I also have problems with other modules

Any help to install Odoo 8 in Amazon servers ?