added output to err in case of unsupported version
added output to err in case of unsupported version


sauliusg/jabref,JabRef/jabref,tobiasdiez/jabref,mairdl/jabref,Braunch/jabref,jhshinn/jabref,tschechlovdev/jabref,oscargus/jabref,sauliusg/jabref,bartsch-dev/jabref,grimes2/jabref,mredaelli/jabref,jhshinn/jabref,zellerdev/jabref,tschechlovdev/jabref,jhshinn/jabref,motokito/jabref,mairdl/jabref,Mr-DLib/jabref,JabRef/jabref,Mr-DLib/jabref,zellerdev/jabref,tobiasdiez/jabref,ayanai1/jabref,bartsch-dev/jabref,mredaelli/jabref,sauliusg/jabref,ayanai1/jabref,obraliar/jabref,mairdl/jabref,zellerdev/jabref,mredaelli/jabref,shitikanth/jabref,jhshinn/jabref,ayanai1/jabref,shitikanth/jabref,Mr-DLib/jabref,Braunch/jabref,motokito/jabref,mredaelli/jabref,shitikanth/jabref,Siedlerchr/jabref,oscargus/jabref,Siedlerchr/jabref,oscargus/jabref,mairdl/jabref,obraliar/jabref,tobiasdiez/jabref,mairdl/jabref,tschechlovdev/jabref,motokito/jabref,motokito/jabref,zellerdev/jabref,obraliar/jabref,Mr-DLib/jabref,shitikanth/jabref,Braunch/jabref,shitikanth/jabref,tobiasdiez/jabref,Braunch/jabref,tschechlovdev/jabref,grimes2/jabref,grimes2/jabref,grimes2/jabref,ayanai1/jabref,JabRef/jabref,ayanai1/jabref,sauliusg/jabref,bartsch-dev/jabref,oscargus/jabref,obraliar/jabref,grimes2/jabref,Mr-DLib/jabref,tschechlovdev/jabref,Siedlerchr/jabref,jhshinn/jabref,JabRef/jabref,obraliar/jabref,motokito/jabref,Braunch/jabref,mredaelli/jabref,Siedlerchr/jabref,bartsch-dev/jabref,bartsch-dev/jabref,zellerdev/jabref,oscargus/jabref