Error 0x8878121D

Value: -2005396963 | 0x8878121D | 2289570333

What does it mean ?

DMUS_E_SCRIPT_NOT_A_REFERENCE  
Attempt was made to set a script's variable by reference to a value that was not an object type.
Value: 4637 | 0x121D | 0b0001001000011101

Where does it come from ?

FACILITY_DIRECTMUSIC  
Direct Music (part of DirectX) - Audio
Value: 2168 | 0x878 | 0b100001111000

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