you need NewtonAddMap in your main and set the name to s_level in the case of this ex. not splashscreen.
The splashscreen is the A6 panel
Code:
string s_level=<main.wmb>;
string s_levelcls=<main.cls>;
string newtonLevel_cls=s_levelcls;
// this is the same name of your map in this ex main.CLS if you save your mapa named main.wmp
function main(){
//........
level_load(s_level);
wait(1);
dll_handle=newtonHandle;
NewtonAddMap(s_levelcls,0);
I hope it help you
best regards,
Marcio