fixed: exception when newly creating an ExplicitGroup
fixed: exception when newly creating an ExplicitGroup


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