I'm currently testing out Survey Force from Force.com Labs http://appexchange.salesforce.com/listingDetail?listingId=a0N30000003I2gDEAS

I've manage to install, deploy and create my first survey, however when I select 'Email link with Contact & Case merge' it is not finding any sites to expose to. The only option I have is internal despite the fact I have a site enabled with the required vforce pages.

I am doing this in a sandbox, would this cause this to happen?

If anyone can advise, I would be very grateful!

Cheers,

Graeme