Hello Monzai Eros,
I had again the same problem. In this case I researched a lot about this problem.
In my case, this problem happen when I use a Internal Queue Steps Scenario and try to run a test using the rectest.xml file.
My Scenario is:
I have a Step Scenario "CreateDelivery", this step have a "Put to queue" atom.
In this atom I call the step "QueueCreateDelivery".
The step scenario "QueueCreateDelivery" is configured as Internal Queue Inbound.
In the "QueueCreateDelivery" Step Scenario I had the same problem than you.
I solved my problem deleting all Intertal Queue in Monitoring --> Internal Queue, restarting the Integration Framework Service and running the "CreateDelivery" Step Scenario again.
This acction delete the rectest.xml file.
I think that you can solve your problem deleting the rectest.xml file.
Regads
Martín Morales