hello, in the environment window, in logic pro 9, i am unable to remove plugins, that is, say if i inserted a gain plugin, i am unable to deselect it to "no plugin" , if i click the plugin only the plugin window opens......help required, i am using ox lion and logic pro 9.1.5

thank you so much.....

hello, in the environment window, in logic pro 9, i am unable to remove plugins, that is, say if i selected a gain plugin, i am unable to deselect it to "no plugin" , if i click the plugin only the plugin window opens......help required