Streaming server 3.5.1 no script works except main.far (VOD)

we own multiple FMS servers, interactive and now we installed

a few Streaming servers.

during the install process we provide the license key

for the Stream server's we got from the adobe representatives

in our country, and all seems well until we try to move an already used VOD

script to the /opt/adobe/fms/applications/vod/ folder

the script is named main.asc and replaces the main.far

which comes with the out of the box VOD application.

this script works on all Interactive servers but fails

to work on the Stream servers.

it simply fails silenty, no logs and no errors are written anywhere....

so i thought the problem might be some feature i try to invoke

in the code while streaming server does not support it, so i stripped

the main.asc to be practically empty..

application.onAppStart = function(){
    trace("application start");
}
application.onAppStop = function(){
    trace("application end");

}

application.onConnect = function( client ) {
    trace("accepting connection");
    application.acceptConnection( client );
}

application.onDisconnect = function(client){
    trace("application.onDisconnect");
}

yet the problem persists, perhaps we have wrong license key?

does the streaming server allow scripting at all???

ps: when i change the licence key of the streaming server to

Interactive server's Key, all starts working...

Any ideas ?