The rockers joined forces in Argentina on Saturday night (March 7)<br />
Guitarist says frontman Axl Rose 'goes through a lot to walk out on stage'
Former Guns N' Roses bassist will release book on May 12
"If I'm dead do I still have to pay taxes?" quips Guns N' Roses frontman
The band's most recent album 'Chinese Democracy' was released 2008
Guitarist squashes hopes of Guns N' Roses reunion
Axl Rose claims the the band have finished recording the follow-up to 'Chinese Democracy'
Frontman also discloses details on 'Chinese Democracy' remix album
The film was recorded at the Hard Rock Casino in Las Vegas in 2012
A source within the band's camp dismisses claim as 'bullshit'