I have OSB server with 10.1 agent. After upgrading to 10.7 version many error messages as below:
[ERROR] [IntroscopeAgent.Agent] Unable to create tracer factories for the following class (library not found): com.wily.powerpack.alsb.tracer.BSReturnTracer
According to the error (see com.wily.powerpack.alsb.tracer.TransportTracer):
[ERROR] [IntroscopeAgent.Agent] Unable to create tracer factories for the following class (library not found): com.wily.powerpack.alsb.tracer.TransportTracer
It mentions it can´t find the class "com.wily.powerpack.alsb.tracer.TransportTracer" and this class is in OSBagent.jar. You can open "OSBagent.jar" with 7zip for instance and you will see that class is located in "...\core\ext\OSBAgent.jar\com\wily\powerpack\alsb\tracer\" so once the OSBagent.jar file is in the right place it should be able to find the classes.
This is resolved by moving the OSBAgent.jar to the "ext" folder of the agent:
This solution should also apply to any "class not found" error with classes starting with com.wily.powerpack.alsb.