clarify error messages
clarify error messages

cbagwell/sox,pcqpcq/sox,CaptainHayashi/sox,mhartzel/sox_personal_fork,Motiejus/sox,davel/sox,CaptainHayashi/sox,CaptainHayashi/sox,MageSlayer/sox,cbagwell/sox,MageSlayer/sox,MageSlayer/sox,CaptainHayashi/sox,Motiejus/sox,pcqpcq/sox,jacksonh/sox,mhartzel/sox_personal_fork,Distrotech/sox,davel/sox,Motiejus/sox,mhartzel/sox_personal_fork,MageSlayer/sox,jacksonh/sox,mhartzel/sox_personal_fork,davel/sox,MageSlayer/sox,jacksonh/sox,uklauer/sox,uklauer/sox,Distrotech/sox,uklauer/sox,pcqpcq/sox,davel/sox,Motiejus/sox,jacksonh/sox,uklauer/sox,Distrotech/sox,Distrotech/sox,cbagwell/sox,cbagwell/sox,pcqpcq/sox