oneThis plural form is used for numbers like: 1
1 error prohibited this %{model} from being saved
otherThis plural form is used for numbers like: everything else
%{count} errors prohibited this %{model} from being saved
1 error prohibited this %{model} from being saved
%{count} errors prohibited this %{model} from being saved
1 error prohibited this %{model} from being saved
%{count} errors prohibited this %{model} from being saved
1 error prohibited this %{model} from being saved
%{count} errors prohibited this %{model} from being saved