error if specified config file does not exist (via #1575)
error if specified config file does not exist (via #1575)

Signed-off-by: Chris Warrick <de6f931166e131a07f31c96c765aee08f061d1a5@gmail.com>

pluser/nikola,getnikola/nikola,x1101/nikola,TyberiusPrime/nikola,pluser/nikola,okin/nikola,lucacerone/nikola,schettino72/nikola,andredias/nikola,lucacerone/nikola,masayuko/nikola,okin/nikola,berezovskyi/nikola,atiro/nikola,immanetize/nikola,JohnTroony/nikola,masayuko/nikola,s2hc-johan/nikola,atiro/nikola,schettino72/nikola,yamila-moreno/nikola,JohnTroony/nikola,techdragon/nikola,getnikola/nikola,knowsuchagency/nikola,andredias/nikola,xuhdev/nikola,atiro/nikola,okin/nikola,x1101/nikola,gwax/nikola,xuhdev/nikola,s2hc-johan/nikola,wcmckee/nikola,jjconti/nikola,s2hc-johan/nikola,getnikola/nikola,knowsuchagency/nikola,yamila-moreno/nikola,x1101/nikola,xuhdev/nikola,techdragon/nikola,TyberiusPrime/nikola,gwax/nikola,schettino72/nikola,JohnTroony/nikola,wcmckee/nikola,jjconti/nikola,TyberiusPrime/nikola,getnikola/nikola,okin/nikola,berezovskyi/nikola,gwax/nikola,immanetize/nikola,pluser/nikola,lucacerone/nikola,immanetize/nikola,jjconti/nikola,andredias/nikola,xuhdev/nikola,techdragon/nikola,wcmckee/nikola,masayuko/nikola,knowsuchagency/nikola,berezovskyi/nikola,yamila-moreno/nikola