I am getting the following error just from installing the stock Blog module from my own deployment of odoo. Could anyone help explain how I can fix this problem?

Traceback (most recent call last):
  File "/opt/odoo/odoo/http.py", line 640, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/opt/odoo/odoo/http.py", line 677, in dispatch
    result = self._call_function(**self.params)
  File "/opt/odoo/odoo/http.py", line 333, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/opt/odoo/odoo/service/model.py", line 101, in wrapper
    return f(dbname, *args, **kwargs)
  File "/opt/odoo/odoo/http.py", line 326, in checked_call
    result = self.endpoint(*a, **kw)
  File "/opt/odoo/odoo/http.py", line 935, in __call__
    return self.method(*args, **kw)
  File "/opt/odoo/odoo/http.py", line 506, in response_wrap
    response = f(*args, **kw)
  File "/opt/odoo/addons/web/controllers/main.py", line 889, in call_button
    action = self._call_kw(model, method, args, {})
  File "/opt/odoo/addons/web/controllers/main.py", line 877, in _call_kw
    return call_kw(request.env[model], method, args, kwargs)
  File "/opt/odoo/odoo/api.py", line 689, in call_kw
    return call_kw_multi(method, model, args, kwargs)
  File "/opt/odoo/odoo/api.py", line 680, in call_kw_multi
    result = method(recs, *args, **kwargs)
  File "/opt/odoo/odoo/addons/base/module/module.py", line 528, in button_immediate_upgrade
    return self._button_immediate_function(type(self).button_upgrade)
  File "/opt/odoo/odoo/addons/base/module/module.py", line 485, in _button_immediate_function
    modules.registry.Registry.new(self._cr.dbname, update_module=True)
  File "/opt/odoo/odoo/modules/registry.py", line 82, in new
    odoo.modules.load_modules(registry._db, force_demo, status, update_module)
  File "/opt/odoo/odoo/modules/loading.py", line 339, in load_modules
    loaded_modules, update_module)
  File "/opt/odoo/odoo/modules/loading.py", line 237, in load_marked_modules
    loaded, processed = load_module_graph(cr, graph, progressdict, report=report, skip_modules=loaded_modules, perform_checks=perform_checks)
  File "/opt/odoo/odoo/modules/loading.py", line 156, in load_module_graph
    _load_data(cr, module_name, idref, mode, kind='data')
  File "/opt/odoo/odoo/modules/loading.py", line 95, in _load_data
    tools.convert_file(cr, module_name, filename, idref, mode, noupdate, kind, report)
  File "/opt/odoo/odoo/tools/convert.py", line 845, in convert_file
    convert_xml_import(cr, module, fp, idref, mode, noupdate, report)
  File "/opt/odoo/odoo/tools/convert.py", line 915, in convert_xml_import
    obj.parse(doc.getroot(), mode=mode)
  File "/opt/odoo/odoo/tools/convert.py", line 799, in parse
    self._tags[rec.tag](rec, de, mode=mode)
  File "/opt/odoo/odoo/tools/convert.py", line 777, in _tag_template
    return self._tag_record(record, data_node)
  File "/opt/odoo/odoo/tools/convert.py", line 707, in _tag_record
    id = self.env(context=rec_context)['ir.model.data']._update(rec_model, self.module, res, rec_id or False, not self.isnoupdate(data_node), noupdate=self.isnoupdate(data_node), mode=self.mode)
  File "/opt/odoo/odoo/addons/base/ir/ir_model.py", line 1229, in _update
    record = record.create(values)
  File "/opt/odoo/odoo/addons/base/ir/ir_ui_view.py", line 362, in create
    return super(View, self).create(self._compute_defaults(values))
  File "/opt/odoo/odoo/models.py", line 3834, in create
    self._fields[key].determine_inverse(record)
  File "/opt/odoo/odoo/fields.py", line 1041, in determine_inverse
    getattr(records, self.inverse)()
  File "/opt/odoo/odoo/addons/base/ir/ir_ui_view.py", line 220, in _inverse_arch
    view.write(data)
  File "/opt/odoo/odoo/addons/base/ir/ir_ui_view.py", line 380, in write
    return super(View, self).write(self._compute_defaults(vals))
  File "/opt/odoo/odoo/models.py", line 3560, in write
    self._write(old_vals)
  File "/opt/odoo/odoo/models.py", line 3711, in _write
    self._validate_fields(vals)
  File "/opt/odoo/odoo/models.py", line 1083, in _validate_fields
    raise ValidationError("%s\n\n%s" % (_("Error while validating constraint"), tools.ustr(e)))
ParseError: "Error while validating constraint

Element '<xpath expr="//div[@name='mail_button']">' cannot be located in parent view

Error context:
View `Contact Form`
[view_id: 1171, xml_id: n/a, model: n/a, parent_id: 239]
None" while parsing None:3, near
<data name="Contact Form" inherit_id="website.contactus" customize_show="True">
            <xpath expr="//div[@name='mail_button']" position="replace">
                <div>
                    <form action="/website/form/" method="post" data-model_name="crm.lead" data-success_page="/page/website_crm.contactus_thanks" class="s_website_form form-horizontal container-fluid mt32" enctype="multipart/form-data">
                        <div class="form-group form-field o_website_form_required_custom">
                            <label class="col-md-3 col-sm-4 control-label" for="contact_name">Your Name</label>
                            <div class="col-md-7 col-sm-8">
                                <input type="text" class="form-control o_website_form_input" name="contact_name" t-att-value="request.params.get('contact_name', '')" required=""/>
                            </div>
                        </div>
                        <div class="form-group form-field">
                            <label class="col-md-3 col-sm-4 control-label" for="phone">Phone Number</label>
                            <div class="col-md-7 col-sm-8">
                                <input type="text" class="form-control o_website_form_input" name="phone" t-att-value="request.params.get('phone', '')"/>
                            </div>
                        </div>
                        <div class="form-group form-field o_website_form_required_custom">
                            <label class="col-md-3 col-sm-4 control-label" for="email_from">Email</label>
                            <div class="col-md-7 col-sm-8">
                                <input type="text" class="form-control o_website_form_input" name="email_from" required="" t-att-value="request.params.get('email_from', '')"/>
                            </div>
                        </div>
                        <div class="form-group form-field o_website_form_required_custom">
                            <label class="col-md-3 col-sm-4 control-label" for="partner_name">Your Company</label>
                            <div class="col-md-7 col-sm-8">
                                <input type="text" class="form-control o_website_form_input" name="partner_name" required="" t-att-value="request.params.get('partner_name', '')"/>
                            </div>
                        </div>
                        <div class="form-group form-field o_website_form_required">
                            <label class="col-md-3 col-sm-4 control-label" for="name">Subject</label>
                            <div class="col-md-7 col-sm-8">
                                <input type="text" class="form-control o_website_form_input" name="name" required="" t-att-value="request.params.get('name', '')"/>
                            </div>
                        </div>
                        <div class="form-group form-field o_website_form_required_custom">
                            <label class="col-md-3 col-sm-4 control-label" for="description">Your Question</label>
                            <div class="col-md-7 col-sm-8">
                                <textarea class="form-control o_website_form_input" name="description" required=""><t t-esc="request.params.get('description', '')"/></textarea>
                            </div>
                        </div>
                        <div class="form-group">
                            <div class="col-md-offset-3 col-sm-offset-4 col-sm-8 col-md-7">
                                <span class="btn btn-primary btn-lg o_website_form_send">Send</span>
                                <span id="o_website_form_result"/>
                            </div>
                        </div>
                    </form>
                </div>
			</xpath>
		</data>