We don't have two different engines in the package. So when you get different results that depend on how you start it, check the command line parameters. You probably have entered different parameters in SED and WED.

In modern 3D games, antialising must be handled by the application. So, use "Application Controlled" unless you have an old 3D app that does not support antialiasing. For A7, it's always "Application Controlled".

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.