there are some of the example of the error after i enable role expire.

The first is on top when i enable role expire.

Next i find at user notifications tab
Warning: array_merge(): Argument #1 is not an array in _form_set_class() (line 3988 of/var/www/mydomain.com/public_html/includes/form.inc).
Warning: array_merge(): Argument #1 is not an array in _form_set_class() (line 3988 of/var/www/mydomain.com/public_html/includes/form.inc).
Warning: array_merge(): Argument #1 is not an array in _form_set_class() (line 3988 of/var/www/mydomain.com/public_html/includes/form.inc).
Warning: array_merge(): Argument #2 is not an array in theme_checkboxes() (line 2974 of/var/www/mydomain.com/public_html/includes/form.inc).
Same error when i update another user account using user1 account.
Warning: array_merge(): Argument #1 is not an array in _form_set_class() (line 3988 of /var/www/mydomain.com/public_html/includes/form.inc).
Warning: array_merge(): Argument #1 is not an array in _form_set_class() (line 3988 of /var/www/mydomain.com/public_html/includes/form.inc).
Warning: array_merge(): Argument #1 is not an array in _form_set_class() (line 3988 of /var/www/mydomain.com/public_html/includes/form.inc).
Warning: array_merge(): Argument #2 is not an array in theme_checkboxes() (line 2974 of /var/www/mydomain.com/public_html/includes/form.inc).

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spacereactor’s picture

spacereactor commented

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sharplesa’s picture

sharplesa commented
Status: Active » Closed (duplicate)

This is actually just a subset of the problem reported in http://drupal.org/node/1214164. Correcting this problem is part of rendering the UI. Hopefully I'll have a patch available in the next few days.