Did an upgrade of WA from 7sp3 to WA 8. The upgrade completed with no
errors, but before I started the agent, I noticed that the
tomcat\4\webapps\gw was missing. There was a gw.war file at the root of
tomcat\4\webapps\ , but nothing else.

I ran the upgrade again, same issue in that the installer was not expanding
the gw.war file.

In the end, I expanded the gw.war using WinZip, thus creating the
tomcat\4\webapps\gw folder and sub folders. Started all the agents and
everything was AOK.