Squid error when enabling AV scanner

[Cheetohz]

Whenever I enable

Clamav anti-virus integration using c-icap

I receive the error on every URL I visit

ERROR

The requested URL could not be retrieved

The following error was encountered while trying to retrieve the URL: http://www.clamav.net/

ICAP protocol error.

The system returned: [No Error]

This means that some aspect of the ICAP communication failed.

Some possible problems are:

The ICAP server is not reachable.

An Illegal response was received from the ICAP server.

I leave the config file blank to load the default config. Am I missing something here?