I did an Avast boot scan, log says " Failed to read DnsHosts"

I checked the log after computer re-booted. 1107/072812:WARNING:dns_config_service_win.cc(668)] Failed to read DnsHosts" . Once I pasted the boot scan log in a word doc. The log showed this repeated message for a page and a half with only the numbers/numbers changing. I do have spybot search & destroy 2.1 installed in a default configuration. Is Spybot blocking Avast boot scan or is there a problem? Not sure what to do and I don't remember seeing this message before in the boot scan log?