Installation error: 0x80070002

Hi

I installed Windows 8.1 Pro with Media Center Update and I noticed that, in the C:\Windows\Panther directory, there is the setuperr.log file that contains the following error:

CBS    Failed to load Session:1752_579012765 [HRESULT = 0x80070002 - ERROR_FILE_NOT_FOUND]

How come?

Thanks

Bye

Balubeto