How do I create a Projector

I want to create my own projector, without hacks but I cannot
when I copy and paste the URL to flash projector 11, the game loads and works fine but when I create the projector it says
Version load error retrying
Please help

Playing in a projector is not illegal, we do NOT have to play on kong or the actual site. I prefer to play ona projector to decrease lag

Bump...
Yea, I also want to do this for a few games, not just rotmg.
But the 'create projector' option is always greyed out