Bug /wp-admin/options-permalink.php

Hi all

I have successfully update my blog from 2.0.7 to 2.1, I have make a quick turn of all function and I have just a little problem when I click on permalink in the admin panel :

Fatal error: Cannot redeclare add_js() (previously declared in /home/archy/suomi/wp-admin/options-permalink.php:9) in /home/archy/suomi/wp-content/plugins/ws_picviewer/ws_picviewer.php on line 28

I have deactivate the ws_picviewer pluggins and everything work fine. I also write a report to the pluggin writer.

Great work !