No suitable agents for Visual Studio (sln) or MSBuild

All,

I have a brand new box which has Visual Studio 2010 installed. Yesterday I installed TeamCity web and agent services.

The website works fine and I don't see any issues with the agent.

I created a small hello world Visual Studio 2010 solution to test it on the server.

I have tried different settings etc but I get the issue "No Suitable Agents". This applies to both Visual Studio(sln) and MSBuild.

In the Agent Requirements page for the project I see the following in the Incompatible Agents Column

myperfectboxforbuilds

Any ideas? I would really appreciate some help.

Rgds,

MK