Error 0x80510006

Value: -2142175226 | 0x80510006 | 2152792070

What does it mean ?

OPC_E_INVALID_CONTENT_TYPE_XML  
The XML markup that defines package content types in the Content Types stream is not well-formed.
Value: 6 | 0x0006 | 0b0000000000000110

Where does it come from ?

FACILITY_OPC  
Open Connectivity Service (Package Consumption)
Value: 81 | 0x051 | 0b01010001

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