usually in unix enviroments user and group should exist berfore installing Caché. In production machines it's not recommended everyone as the group, but if the machine is personal, this isn't an issue.  

Try to review the pre-installation tasks (or pre-requisits for installation) in the installation guide.

It should bring some light to the process.

are these the last cconsole.log lines?  have you forced down caché?

try to force it down, apply the chmod -R +x in the manager directory and start it again

when status is sign-on inhibited, the way to put down caché is using ccontrol force or cforce command from the .../bin folder.

what does cconsole.log show?