Error 0x80040D1B

Value: -2147218149 | 0x80040D1B | 2147749147

What does it mean ?

GTHR_E_PROJECT_NOT_INITIALIZED  
The gatherer index was not initialized. The content index must be remounted. If the index is still not initialized, remove it.
Value: 3355 | 0x0D1B | 0b0000110100011011

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

StackOverflow

Other Errors for FACILITY_ITF