Error 0x80029C84

Value: -2147312508 | 0x80029C84 | 2147654788

What does it mean ?

TYPE_E_CIRCULARTYPE  
Circular dependency between types/modules.
Value: 40068 | 0x9C84 | 0b1001110010000100

Where does it come from ?

FACILITY_DISPATCH  
COM Dispatch (IDispatch interface)
Value: 2 | 0x002 | 0b00000010

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