I have an error on installing the Asterisk360 Modul.

this is the last part of the error but i don´t know what i should do with it.

I had installed all required dependencies. 

... File "/opt/bitnami/apps/odoo/lib/odoo-8.0_a2115ef-py2.7.egg/openerp/models.py", line 1276, in _validate_fields raise ValidationError('\n'.join(errors))

ParseError: "ValidateError Field(s) `arch` failed against a constraint: Invalid view definition

Error details: Element '<field name="country_prefix">' cannot be located in parent view

Error context: View `asterisk360.screenpop.server.form` [view_id: 1438, xml_id: n/a, model: asterisk.server, parent_id: 1387]" while parsing /opt/bitnami/apps/odoo/lib/odoo-8.0_a2115ef-py2.7.egg/openerp/addons/asterisk360/asterisk360_view.xml:21, near

<record id="view_asterisk360_screenpop_server_standalone_tree" model="ir.ui.view"> 
<field name="name">asterisk360.screenpop.server.form</field>
<field name="model">asterisk.server</field>
<field name="inherit_id" ref="asterisk_click2dial.view_asterisk_server_tree"/>
<field name="arch" type="xml"> <field position="after" name="country_prefix">
<field name="ws_address"/>
</field>
</field>
</record>