I can not run a multiscatter with vray

I use 3dsmax 2012 64 and vray 2.20.02 but I can not use a multiscatter I have an error message in 3dsmax:

V-Ray Adv 2.20.02 is not supported by current version of Multiscatter.

I tried another version of vray but it does not work

please help me thank you!

;)