If you are behind a web proxy you will need to configure the client to use that proxy so that rosters can be downloaded.

You will need to edit the "options.nfo" file in a text editor such as notepad. Add these four lines at the bottom of the file:

webproxyhost=<web proxy user host>
webproxyport=<web proxy port>
webproxyuser=<web proxy user name>
webproxypassword=<web proxy user password>

If your web proxy does not require authentication, you may leave off the last two lines. Most proxies do not need them.

If you do not have your proxy settings, you may be able to get them by checking Internet Explorer. To do so:

Open Internet Explorer
Click Tools, then Internet Options.
Click the Connection Tab at the top, then click the Lan Settings button on the bottom of that page.
Near the bottom of that page you should see the address and port of the proxy. Add these to your options.nfo file as described above, using the address for the webproxyhost, and the port for webproxyport.

If you do not see anything in that section, but instead have "Use automatic configuration script" checked, things are a little more tricky. In this case, copy the address listed under that check box and close the options window. Paste the address into the Address bar and press enter. It should allow you to download the automatic configuration script, and if you read through it, you should be able to find the proxy information.

If neither of these methods works to get your proxy information, you will need to contact your network administrator to get it.