second issue take a look at my previous post.
for the first one, would be great if you clear the logs and start the server once again and upload full server log here for analysis. As the exception does not really make sense (ORA-00923: FROM keyword not found where expected).
The other exception with class not found is probably caused by not able to connect to task server as it expects hornetq service to be listening on localhost:5445. Human task war starts hornetq service on 5445 port and ant task starts human task standalone with Mina.