when update modules-admin panel, click button get error: version 3.2

='{$_POST['var7']}' where id='{$client['id']}' "); if (!$client['avatar']) { redirect(url('account/avatar'),1); } else { redirect(url('u/'.$client['username']),1); } } else { sys_back('cannot update userinfo'); } } function notifications() { global $content, $db, $nav, $client, $sub_menu, $locations, $current_sub_menu; $current_sub_menu['href'] = 'account/notifications'; section_content(''); foreach ($this->mail_noti_arr as $key=>$flag) { $checked = $client['settings'][$key] ? '':'checked'; section_content(''.$flag.'
'); } section_content('
'); section_close(t('Receive emails for these kinds of notifications')); } function noti
even we update anything in admin or some time not show error only blank page.

This is not a bug.
No one else got this error. It should be caused by your own modified code or something else.
Please PM me your site url and admin account so that I can see what's wrong with your site.

Please answer a question: Have you modified anything to Jcow? If any, tell me where.

i have install on localhost. Two times. But i will try it again.

I'm completed confused by your post.
Are you installing, or upgrading, or customizing?
If you are debugging your own mods on localhost, I can't help any more.

have you a closing php tag somewhere you shouldn't?