Hi Tes,
There are 2 ERRORs documented in the other thread:
[ERROR] [IntroscopeAgent.Agent] An error occurred formatting jms client metric namenull
[ERROR] [IntroscopeAgent.Agent] Exception starting method tracer
com.wily.introscope.agent.trace.frontend.jms.JMSFrontendTracer actual trace for com.sun.proxy.$Proxy40.onMessage
Are you only seeing ERROR "Exception starting method tracer"? Is it for the same class as above or different?
It might be best to also investigate these symptoms via the new case I suggested in your previous "concurrent invocations increasing" thread: concurrent invocations increasing after upgrade to 10.5.2.15
Then we can determine if related to same root cause and then split out if not.
Thanks
Lynn