# File lib/pluginfactory.rb, line 256
        def create( class_name, *args, &block )
                subclass = get_subclass( class_name )

                begin
                        return subclass.new( *args, &block )
                rescue => err
                        nicetrace = err.backtrace.reject {|frame| /#{__FILE__}/ =~ frame}
                        msg = "When creating '#{class_name}': " + err.message
                        Kernel.raise( err, msg, nicetrace )
                end
        end