Fixed os.path.exists call
Fixed os.path.exists call

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