[jboss-user] [jBPM] - Error starting process instance - getting HTTP 500: Unknown error

Senthil Sathiya [https://community.jboss.org/people/skumar0105] created the discussion "Error starting process instance - getting HTTP 500: Unknown error" To view the discussion, visit: https://community.jboss.org/message/830796#830796 -------------------------------------------------------------- Hi , I have created a  simple bpmn job using jbpm 5.4 libraries "start --->  task -> and end event". I have attached a custom work item handler to the task ( CustomHandler.java) . I have been able to successfully commit the bpm file into guvnor and compile the package. The Jar file is copied into \jboss-as-7.1.1.Final\standalone\deployments\jbpm-gwt-console-server.war\WEB-INF\lib\ folder. When I open the  jbpm console ( http://localhost:8080/jbpm-console/ http://localhost:8080/jbpm-console/ ) i can see the process listed , but when I try to click start the process it errors out with the following msg : server/rs/process/definition/com.sample.bpmn.sampleHTformvariables/new_instance 2013-07-31 16:23:37,610 [ERROR] <ul><li>URL: ' http://localhost:8080/gwt-console-server/rs/process/definition/com.sample... http://localhost:8080/gwt-console-server/rs/process/definition/com.sample... <li>Action: 'org.jboss.bpm.console.client.process.StartNewInstanceAction' <li>Exception: 'class com.google.gwt.http.client.RequestException'</ul> HTTP 500: Unknown error com.google.gwt.http.client.RequestException: HTTP 500: Unknown error When I replace the Task with a User Task , the process starts without any issues. I would appreciate some assistance on this , have been dealing with this issue for the past few days ! Thanks in advance Senthil -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/830796#830796] Start a new discussion in jBPM at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]