The parameter on WED : sk.wdl -nx 30 -wnd (sk.wdl is the name of the script), on SED i found -eq (what's this parameter? May be i accidentaly change it?).

So i change the parameter in SED using the parameter on WED, nope, still showing weird watermark just like the screenshot i show you before.

I try this,
I remove acknex.dll and the result: Engine can't be start up showing error message, on SED. On WED, the engine won't start at all, no start up screen, just doing nothing after i click the OK button on run level window.

When i remove the acknex.exe and put it back the acknex.dll in the original location, WED showing message if acknex.exe not found. But SED still run the engine, that's the reason i said SED using dll and WED using exe.

Anyway, it's still no explanation the weird watermark when i run the script using SED.