Encountered this error: java.lang.reflect.InvocationTargetException on OPP

 We encountered the following error, we applied patch: 7697388 patch, but we still experience the error. Hopefully some of you have seen this issue before?

[8/18/10 12:12:59 PM] [OPPServiceThread0] Post-processing request 18076940.

[8/18/10 12:12:59 PM] [36445:RT18076940] Executing post-processing actions for request 18076940.

[8/18/10 12:12:59 PM] [36445:RT18076940] Starting XML Publisher post-processing action.

[8/18/10 12:12:59 PM] [36445:RT18076940] 

Template code: AECOMPAINVXMLMASS

Template app:  AECOM

Language:      en

Territory:     CA

Output type:   PDF

[8/18/10 12:13:00 PM] [UNEXPECTED] [36445:RT18076940] java.lang.reflect.InvocationTargetException

        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:88)

        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:61)

        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java(Compiled Code))

        at java.lang.reflect.Method.invoke(Method.java(Compiled Code))