I installed Role Manager on WP2.1 but I didn't really change anything, I just take a look in RM's options and then wanted to uninstall it. But it seems that I (or the plugin) somehow disabled myself from accessing the plugins.php page so I can't remove any plugins! I deleted RM's folder via FTP, but the problem persists. I am the only admin, and I have all the capabilities I can have, all of them, but I still can't access plugins.php. How can I fix this?