MAX/MSP doesn't work

hello there.

recently i’ve acquired MAX/MSP 4.6.2 with jitter 1.6.2
after doing the response, 2 errors appear on the MAX window…
–error:(mxj)classloader unable to find com/cycling74/jitter/JitterInstallUtility

–error: Jitter Java support: could not find jvm

JITTER works and MAX/MSP simply ignores all kind of MSP objects
(like dac~)
i’m having this problem over a month. and i can