Error 0x80045064

Value: -2147200924 | 0x80045064 | 2147766372

What does it mean ?

SPERR_ALREADY_DELETED  
The object is a stale reference and is invalid to use. For example having a ISpeechGrammarRule object reference and then calling ISpeechRecoGrammar::Reset() will cause the rule object to be invalidated. Calling any methods after is will result in this error.
Value: 20580 | 0x5064 | 0b0101000001100100

Where does it come from ?

FACILITY_ITF  
COM/OLE Interface management. FACILITY_ITF is designated for user-defined error codes returned from interface methods
Value: 4 | 0x004 | 0b00000100

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Other Errors for FACILITY_ITF