"Undefined index:" displayed when creating report. Report displays but cannot be used as a dashlet.

Hello,

I first suspected that these were some kind of installation problem, but Hershel suggested posting them as an issue
http://forum.civicrm.org/index.php/topic,22004.msg92260.html#msg92260

I hope to create a duplicate installation on another machine to verify that it is not an installation problem and to practice recreating data from a backup. I'll post if the issue is resolved or repeated.

SYSTEM:
Ubuntu 11.1, Drupal 7, CiviCRM 4.0.0 (according to the "powered by" footer)

PROBLEM #1:
When I select Reports-->Current Employer Report, before the results, I see many rows that look like this:

Notice: Undefined index: type in CRM_Report_Form_Contact_CurrentEmployer->select() (line 170 of /var/www/drupal-7.0/sites/all/modules/civicrm/CRM/Report/Form/Contact/CurrentEmployer.php).
Notice: Undefined index: operatorType in CRM_Report_Form_Contact_CurrentEmployer->where() (line 209 of /var/www/drupal-7.0/sites/all/modules/civicrm/CRM/Report/Form/Contact/CurrentEmployer.php).
Notice: Undefined index: civicrm_employer_organization_name in CRM_Report_Form_Contact_CurrentEmployer->alterDisplay() (line 281 of /var/www/drupal-7.0/sites/all/modules/civicrm/CRM/Report/Form/Contact/CurrentEmployer.php).
Notice: Undefined index: civicrm_employer_id in CRM_Report_Form_Contact_CurrentEmployer->alterDisplay() (line 281 of /var/www/drupal-7.0/sites/all/modules/civicrm/CRM/Report/Form/Contact/CurrentEmployer.php).

PROBLEM #2 (related?)
When I try to turn a report instance into a dashlet. The report displays correctly but shows the error below. The dashlet shows the error but does not display anything.

Notice: Undefined index: label in CRM_Core_BAO_Navigation::add() (line 110 of /var/www/drupal-7.0/sites/all/modules/civicrm/CRM/Core/BAO/Navigation.php).
Notice: Undefined index: permission in CRM_Core_BAO_Navigation::add() (line 116 of /var/www/drupal-7.0/sites/all/modules/civicrm/CRM/Core/BAO/Navigation.php).

POSSIBLE PROBLEM #3
Given this error, I'm not sure if my reports are displaying correctly. The column headers are static and cannot be used to click-to-sort the data.

thank you for all your work in producing and improving this software.