To check whether another TCP/IP stack is running, open a shell window and enter
version bsdsocket.library full
If it replies "object not found", then no other stack is running. If it returns some version information, then the information should give a hint which other stack it is.
To check whether Genesis is installed correctly, enter
assign exists amitcp:
If the command returns without output, then the assign does not exist. If it outputs a path, check if the path points to Genesis.
If the assign does not exist or if it points to the wrong directory, edit s:user-startup and make sure that there is exactly one section which creates an AmiTCP: assign and that this assign points to Genesis.