BPM-0704: An error ocurred while executing custom script

Discussion created by deepud on Sep 6, 2013
Latest reply on Sep 9, 2013 by deepud
Hi Experts,

I have a process is scheduled to generate instances daily. Till date no instance has completed successfully.
I see a number of instances in 'running' state though.

The error message for failed instances is as below..

java.lang.NullPointerException at com.niku.union.gel.GELController.invoke( at at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$ at

The process has a gel script in 'start step'.
Any ideas?