Nuke help!!

When i play on garrys mod and i try to use a nuke is just come up with some messages on the corner of the screen and nothing happens is there a way i can turn this off?

It probably means there is a Lua error in the nuke you installed. Perhaps it was broken by an update.
My advice is to try and download another nuke, and see if that works. The Toxic Nuke works perfectly for me.