turbonaticsracing

Hi guys I just recently got a z2 and after installing it last night the screen goes no further then "starting pioneer navigation". I was wondering if anyone has any clue to what i might be doing wrong. I'm installing it in my 04 altima and all the wires seem to be straight forward. The only thing that is not installed and I don't have is the gps thing, so I don't know if that has anything to do with it, if so is there a bypass mod. I'm only using as a normal stereo no amps subs etc.