The log:
MSI (s) (74:10) [07:52:29:842]: Executing op: ActionStart(Name=UnregisterTypeLibraries,Description=Unregistering type libraries...,Template=LibID: [1])
MSI (s) (74:10) [07:52:29:842]: Executing op: TypeLibraryUnregister(,,FilePath=FILEPATH ,LibID={6EAC9D20-9C4F-11D0-8D1C-00A0241616B5},Version=769,,Language=0,HelpPath=FILEPATH ,BinaryType=0)
MSI (s) (74:10) [07:52:29:842]: CMsiServices::ProcessTypeLibrary runs in local context, not impersonated.
MSI (s) (74:10) [07:52:29:842]: ProcessTypeLibraryCore returns: -2147312566. (0 means OK)
MSI (s) (74:10) [07:52:29:842]: Note: 1: 2107 2: FILEPATH 3: -2147312566