Animating

I have made a fully animated scene (for the scout) with 3DS MAX and SDK, but I have a problem; how do I apply these animations in gmod. I heard there was a special tool to animate npc but I heard it does not work any more. Can someone tell me what to do?

[Update] Ok, I now get the idea of how to operate it but now I have a bigger problem; this error pons\gmod_tool\stools
pc_actor_anim.lua:87] attempt to index field ‘?’ (a nil value)
[addons
pcgun\lua\weapons\gmod_tool\stools
pc_actor_anim.lua:87] attempt to index field ‘?’ (a nil value)

Seriously guys, help!