title: Blank page in OpenERP after module install
body: <p>Maybe someone could help me.
  I've installed Odoo (OpenERP) on localhost and I've installed many basic modules (15). I have a problem, after install <code>Expense Tracker</code> module the web client displays a blank page, in any section. I can't see also the <code>Settings</code> page, just the menu bar at the top.</p>
  
  <p>If I install just the <code>Expense Tracker</code>, it works. So it isn't a module problem.</p>
  
  <p>Thank you! :)</p>