I've tried to install it on a fresh 1.7.3 install of wowroster.
However, I'm having the following (probably noobish) problems:
~ I'm installing the roster as a subdomain (http://[rostername].[domain].[tld]/ and it seems that this roster addon dont take that into account. It keeps trying to find the addon.php script under /roster/ , or did I just mess something up?
Addy is: http://dsg.forumtech.ca