an issue with saving my music

[boot-cheese-3000]

ok so i started working on some music and made a track worth saving. when i make a conversion into a wav file it won't save but the kick at the beginning of the track. i selected Master and tried over and over again to save it but it refuses to do so. is there something i'm missing here or forgetting? yes this is my 1st time playing with abelton and hopefully my newly-acquired customized APC 60 that i bought from here. any help would be appreciated because i'm getting burned out right now on this.