SetAcceleration Optix4.0.0 fails after updating from 3.9.1


After updating the version of Optix from 3.9.1 to 4.0.0 I’m experiencing error in SetAcceleration.
the error is :
{m_message=“Invalid context (Details: Function “_rtGeometryGroupValidate” caught exception: Validation error: Traverser not set, [1704431])” …} optix::Exception &

what should I do?


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