installing Solaris 2.6 version on a 2.8 box; URL to admin page isn't correct. It looks internally for htdocs/weinator/... not htdocs/webinator. A link within htdocs fixes it
I believe the error arose from trying to use the URL suggested at the completion of the installation process. The installation suggested a URL to go to for the administration interface. Hitting that URL returned the error that a path internal to the URL did not exist. I don't have the suggested URL, although the line in your install "$smso$CgiUrl/texis$CgiTmpExt$CgiExt/webinator/dowalk/$rmso" could be it, nor the exact error other than the reference to /weinator rather than /webinator coming from trying to access the suggested URL.
Galen