fix error message format in ctuple utility code
fix error message format in ctuple utility code

c-blake/cython,roxyboy/cython,c-blake/cython,scoder/cython,andreasvc/cython,fabianrost84/cython,JelleZijlstra/cython,roxyboy/cython,cython/cython,achernet/cython,encukou/cython,fabianrost84/cython,dahebolangkuan/cython,marscher/cython,encukou/cython,dahebolangkuan/cython,JelleZijlstra/cython,marscher/cython,scoder/cython,roxyboy/cython,scoder/cython,hhsprings/cython,cython/cython,ABcDexter/cython,mrGeen/cython,marscher/cython,da-woods/cython,JelleZijlstra/cython,ABcDexter/cython,encukou/cython,encukou/cython,hhsprings/cython,cython/cython,achernet/cython,madjar/cython,dahebolangkuan/cython,mrGeen/cython,JelleZijlstra/cython,c-blake/cython,roxyboy/cython,slonik-az/cython,hhsprings/cython,mcanthony/cython,roxyboy/cython,da-woods/cython,ABcDexter/cython,fperez/cython,scoder/cython,dahebolangkuan/cython,ABcDexter/cython,mcanthony/cython,fabianrost84/cython,mcanthony/cython,acrispin/cython,marscher/cython,slonik-az/cython,andreasvc/cython,mcanthony/cython,slonik-az/cython,mrGeen/cython,achernet/cython,slonik-az/cython,fperez/cython,ChristopherHogan/cython,ABcDexter/cython,hickford/cython,JelleZijlstra/cython,acrispin/cython,achernet/cython,encukou/cython,achernet/cython,fperez/cython,c-blake/cython,hickford/cython,cython/cython,andreasvc/cython,slonik-az/cython,andreasvc/cython,da-woods/cython,hickford/cython,mcanthony/cython,da-woods/cython,madjar/cython,madjar/cython,ChristopherHogan/cython,fabianrost84/cython,madjar/cython,hickford/cython,ChristopherHogan/cython,acrispin/cython,fperez/cython,marscher/cython,hhsprings/cython,madjar/cython,mrGeen/cython,fabianrost84/cython,mrGeen/cython,hickford/cython,acrispin/cython,c-blake/cython,andreasvc/cython,hhsprings/cython,dahebolangkuan/cython,acrispin/cython,fperez/cython