@Cowabanga
I saw from your profile that you own the commercial edition.
If session_open is a Pro only feature, you could paste the code below into the main function and try to start it.
if(edition == 4) //Will work only wiht Pro
{
//Pro code here.
if ( session_open( "demo" )) {
wait(1);
}
}
Can you confirm it works or if it generates an error message?