An exception happened during the deployment of the process

[mryilauer]

Reason: An unexpected exception caused the deployment to fail.

I keep running into this. I have worked the samples, they work, I have the console running and I can deploy and run processes straight out of the book, but when I try to run the simplest hello world type of process that I create from scratch, I routinely run into this. I am also unable to save and deploy the process because on save it shows a null pointer exception. It says to check the log, but I believe it logs to the console, and I don't see anything useful there. Here's the nothing 3 node process I am trying to deploy (the junit tests all work fine, process gets loaded, and signal moves it from node to node)

<?xml version="1.0" encoding="UTF-8"?>

<process-definition xmlns="urn:jbpm.org:jpdl-3.2" name="simple">
<start-state name="start">


</start-state>





<end-state name="end">
</end-state>

</process-definition>

Any ideas would be greatly appreciated. The Test Connection succeeds.

[mryilauer]

Sorry, the xml didn't render properly, let me try again

<?xml version="1.0" encoding="UTF-8"?>

<process-definition xmlns="urn:jbpm.org:jpdl-3.2" name="simple">
 <start-state name="start">
 <transition name="to_wait" to="wait for signature"></transition>

 </start-state>

 <state name="wait for signature">
 <transition name="" to="end"></transition>
 </state>

 <end-state name="end">
 </end-state>

</process-definition>

[kukeltje]

look at the logs of the server to see what goes wrong

[mryilauer]

nothing at all shows up in jbpm-jdpl-3.2.2/server/server/jbpm/log/server.log; every 5 seconds it just does its thing and nothing shows up for the failed deploy. The failure seems to be a syntax error, since when I have a 2 node diagram, it deploys fine, but when I add another node, it won't.

[mryilauer]

The whole deploy from the IDE process seems very brittle. I took the websale example, it worked and deployed fine, then I added a node to the diagram without any transitions to the existing process, and I get the same deployment error. Then I removed the node, and it still wouldn't deploy. Then I used local history to revert to the process from before I started monkeying with it, and it still won't deploy.

Sometimes, deleting the gpd.xml and forcing it to regenerate seems to help, but only sometimes.

What I wanted to do was to start with the example, make a small change, make sure it still works, and continue, but the smallest change, even after it's undone, breaks the deployment process.