fix: added error generation for missing condition in contrast vector specification
fix: added error generation for missing condition in contrast vector specification

mick-d/nipype,christianbrodbeck/nipype,iglpdc/nipype,rameshvs/nipype,gerddie/nipype,FCP-INDI/nipype,pearsonlab/nipype,grlee77/nipype,mick-d/nipype,mick-d/nipype,carolFrohlich/nipype,dgellis90/nipype,mick-d/nipype,arokem/nipype,fprados/nipype,iglpdc/nipype,fprados/nipype,iglpdc/nipype,grlee77/nipype,sgiavasis/nipype,FCP-INDI/nipype,dgellis90/nipype,sgiavasis/nipype,carlohamalainen/nipype,dgellis90/nipype,blakedewey/nipype,wanderine/nipype,wanderine/nipype,glatard/nipype,carlohamalainen/nipype,rameshvs/nipype,carolFrohlich/nipype,carlohamalainen/nipype,arokem/nipype,blakedewey/nipype,JohnGriffiths/nipype,dgellis90/nipype,Leoniela/nipype,glatard/nipype,gerddie/nipype,rameshvs/nipype,grlee77/nipype,blakedewey/nipype,sgiavasis/nipype,wanderine/nipype,FCP-INDI/nipype,JohnGriffiths/nipype,mick-d/nipype_source,gerddie/nipype,FredLoney/nipype,FCP-INDI/nipype,dmordom/nipype,christianbrodbeck/nipype,glatard/nipype,pearsonlab/nipype,sgiavasis/nipype,mick-d/nipype_source,mick-d/nipype_source,gerddie/nipype,JohnGriffiths/nipype,carolFrohlich/nipype,wanderine/nipype,blakedewey/nipype,iglpdc/nipype,carolFrohlich/nipype,fprados/nipype,FredLoney/nipype,pearsonlab/nipype,glatard/nipype,Leoniela/nipype,rameshvs/nipype,dmordom/nipype,arokem/nipype,pearsonlab/nipype,FredLoney/nipype,JohnGriffiths/nipype,Leoniela/nipype,arokem/nipype,grlee77/nipype,dmordom/nipype