SC8.1 will not run

I get following error:

"Service Unavailable

The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later."

The TAB message says: 505-Service Unavailable
It seems like WEB server is not running. Tired to start manually but no success.

FF browser link: http://127.0.0.1:8081/scriptcase/

SC 8.0 runs fine on port 88

Anybody has this problem or knows what might cause it ?
ARTHUR

No, i don’t have this problem. One thing to look at is to see if the port is in use by some other process or if a firewall is rejecting the port?

ok, I managed to figure out to fix it. Now it asks me for a new license. I tohught 8.1 runs on the same license

any ideas ?
ARTHUR

On upgrading from 8.0… to 8.1… you need a new serial… So you have to contact sc for that.