[rules-dev] troubleshooting errors in guvnor

[Zoltan Farkas]

I am attempting to build some rules with guvnor (5.0 latest snapshot),
and I get:

"Sorry, a technical error occurred. Please contact a system
administrator."

I go to the event log and see a:

org.drools.RuntimeException: java.lang.IllegalArgumentException:
argument type mismatch

I have a question:

How can I get the stack trace of the exception, at some point in time
they were available in the app server error log, but I don't see them
there anymore. Stack trace would be of great help to figure out what is
going wrong.

Thanks

Zoltan Farkas