LoadComplete shows this message when you are editing a scenario that calls other scenarios.
Subscenarios that your scenario calls can also call other scenarios. Therefore, it is possible that your scenario includes a reference to itself. This can be a direct reference, or a reference in one of the called subscenarios.
LoadComplete cannot run a scenario referring to itself.
To solve the problem, check your scenario and included subscenarios and make sure they do not refer to the scenario that you are editing now.