If you're having problems with the new version/build, you can follow these instructions to install the slightly older build which allows individual webcam, at least until WLM 2011 comes out...
quote:
Start > (In XP, click Run) > Type in the following & press enter:
msiexec /x {B57EAFF2-D6EE-4C6C-9175-ED9F17BFC1BC}
Follow instructions to uninstall WLM.
Then download and install this version:
http://messenger.jonathankay.com/redir/w3qfe2/wlm.asp
But otherwise all I can recommend is that you make sure no software/programs could be causing conflict, which may not be allowing the webcam connection to go through such as firewall, anti-virus or internet security.