I have the same problem...
At least in my case, the "filter rendering" activation thingy, didnt worked...
so i had to use the Rices Video Plugin 1.6 and the Vela Boss appeared, but there were a problem, the aim was there, but it like creates a image of itself and when i was like at the middle of the boss the whole screen were green, i could see trough the green shade and aim perfectly because the real aim was a lil bit more greenish than its fake copy, yhea it was tough to fight with a green boss =P
however, when i killed it i changed to the default plug in the Jaboo3D8 one and when i was with Lupo, in the Stage of the pyramid, there, you have to enter a place where you have to use the NightVision Googles, so i put them on and the same problem was there,
i will put a screen and the Save State so u can try to help me.
Now i tried again with the Rices Plug in but it was the same, is there any solutions for me?
By the way, it runs perfect with the Xbox360 Controller , and if u want a Save state after beatin the boss, just lend me ur Save state, i'll kill him and inmediatly and give it back to you so you could see when you...
oh my god, i wont tell you