Warning: array_intersect_key() [function.array-intersect-key]: Argument #2 is not an array in _roleassign_form_alter()

I receive the follow warning on the when creating a new user on admin/people -> create new user when logged in with an account with administer users and roleassign permissions.

Notice: Trying to get property of non-object in _roleassign_form_alter() (line 60 of /Applications/XAMPP/xamppfiles/htdocs/indyuserguide/sites/all/modules/roleassign/roleassign.admin.inc).
Warning: array_diff() [function.array-diff]: Argument #1 is not an array in _roleassign_form_alter() (line 65 of /Applications/XAMPP/xamppfiles/htdocs/indyuserguide/sites/all/modules/roleassign/roleassign.admin.inc).
Warning: array_intersect_key() [function.array-intersect-key]: Argument #2 is not an array in _roleassign_form_alter() (line 66 of /Applications/XAMPP/xamppfiles/htdocs/indyuserguide/sites/all/modules/roleassign/roleassign.admin.inc).
Warning: array_keys() expects parameter 1 to be array, null given in _roleassign_form_alter() (line 80 of /Applications/XAMPP/xamppfiles/htdocs/indyuserguide/sites/all/modules/roleassign/roleassign.admin.inc).
Warning: Invalid argument supplied for foreach() in form_type_checkboxes_value() (line 2233 of /Applications/XAMPP/xamppfiles/htdocs/indyuserguide/includes/form.inc).