what causes "SSDP Local Peer Discovery: Could not open multicast socket: Address not available"

and what needs to be done to fix it?

I'm using 1.96 on XP pro

I'm getting that too & I suspect it's because Windows firewall isn't remembering about Tixati & blocks till you respond to the dialog.
If Tixati waited a little longer or retried I don't think it would be an issue.

I'm using a portable install of Tixati on a removable drive currently under Win7