There were some problems with the Live Mesh Installer for Mobile, these are now fixed! For users who saw a failure to add their mobile phone to their mesh, we have deployed an updated build of Live Mesh for Mobile. You will need to download the Mobile Installer from http://m.mesh.com/install/wm6/LiveMesh.cab again. Once you have the new installer on your phone, run it and the installed client will be upgraded to the new version. The new Mobile Live Mesh Client is version number 0.9.3424.6 (check this through Menu -> About). Now you can start Live Mesh, sign in, and you should be good to go.