title: Odoo xml view ParseError: "Invalid view definition
body: <p>Can some one notice what is wrong with this view. i'm getting ParseError: "Invalid view definition</p>
  
  <pre><code>&lt;record id="project_part_view_tree_wizz" model="ir.ui.view"&gt;
              &lt;field name="name"&gt;Project Part List&lt;/field&gt;
              &lt;field name="model"&gt;project.part&lt;/field&gt;
              &lt;field name="arch" type="xml"&gt;
                  &lt;tree string="Parts" editable="bottom"&gt;
                      &lt;group&gt;
                          &lt;field name="project_id"/&gt;
                          &lt;field name="number" /&gt;
                          &lt;field name="object"/&gt;
                          &lt;field name="stage_id"/&gt;
                          &lt;field name="part_template_id"/&gt;
                          &lt;field name="name"/&gt;
                          &lt;field name="user_id"/&gt;
                      &lt;/group&gt;
                      &lt;footer&gt;
                          &lt;button name="generate_project_part" string="Generate"
                                  type="object" class="oe_highlight"/&gt;
                          &lt;button string="Cancel" class="oe_link"
                                  special="cancel"/&gt;
                      &lt;/footer&gt;
                  &lt;/tree&gt;
              &lt;/field&gt;
          &lt;/record&gt;
  </code></pre>