Well, the rook needs some more help!

Help! My new Air Arms XS510SS just sprung a leak. Was just out back sighting it in, and on my very last shot it blew a seal and all the air came out the end of the barrel. Zero on the gauge, if I try to add air, it comes out the muzzle. Called Airgun Depot, and of course they're closed for the weekend already. What did I probably blow, and I'm assuming it will have to go back to Airgun Depot for service. Any help on this greatly appreciated!