Application Express Listener :: 2.0 Configured But Can't Start In Standalone Mode

I am trying to use the Apex listener 2.0 (instead of HTTP server). I installed and went thru the configuration of the listener, but I must be missing something. When I do the java -jar apex.war to start it up in standalone mode, I get the configuration properties etc., but when I open up my browser and try to bring up APEX with http://localhost:8080/apex/ I get a 500 - Internal Server error with the info below.

***********ERROR*********** init: # headers=43 declare nm owa.vc_arr := ?; vl owa.vc_arr := ?; begin owa.init_cgi_env( ?, nm, vl ); htp.init; htp.HTBUF_LEN := 63; ? := sys_context('USERENV','SID'); end; SID:880 CALL: begin apex; commit; end; BINDS PAGE CALL: declare nlns number := 999999; l_clob CLOB; lines htp.htbuf_arr; l_buff varchar2(32767); l_clob_init boolean:= false; l_file varchar2(5); l_doc_info varchar2(1000); begin OWA.GET_PAGE(lines, nlns); if (nlns > 1) then for i in 1..nlns loop if ( length(lines(i)) > 0 ) then if ( ( lengthb(l_buff) + lengthb(lines(i))) > 32767) then if (NOT l_clob_init) then dbms_lob.createtemporary(l_clob, TRUE); dbms_lob.open(l_clob, dbms_lob.lob_readwrite); l_clob_init:=true; end if; dbms_lob.writeappend(l_clob,length(l_buff),l_buff); l_buff := lines(i); else l_buff := l_buff || lines(i); end if; end if; end loop; end if; if (l_clob_init) then

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