I tested the odoo cms ,for some weeks.

Now iwould like to update the system to the newest version.

During the update this error occurs:

openerp.modules.loading: loading website/views/website/tem

ERROR openerp.addons.base.ir.ir_ui_view: Element '<xpath expr="//t[@t-call-assets=website.assets_frontend"]">' cannot be located in parent view

Error context:

View `Editor`

[view_id: 244, xml_id: website.editor_head; model: n/a, parent_id: 242]

How can I update my odoo without loosing my website?