May be a Windows 7 thing but it is not a bug with Hoster.
Is the secondary monitor on before you fire up the laptop?
Have you set the second monitor as Active and as Extended desktop?
Also, be sure you do all the set-up steps at the following link. It says it is for Vista but it also applies to Windows 7.
http://www.mtu.com/upgrades/hoster/v...de-hoster4.htm