Please help me!
I got error "There was an error while processing a database query " while installing the Safe URL plugin in my site www.b4uphotos.com ???
my version is 1.4.4!
if you can't disable the plugin using the coppermine user interface, use a tool like phpMyAdmin, browse coppermine's plugins table and disable the plugin there.
In the case of the sef_url plugin, there might be a .htaccess file in coppermine's root folder that you will have to delete as well using your FTP app.