problem

please! help me!!!
i’m doing my thesis about linux antivirus…and i have to install avast.
but when i run it, it show me this:

avast: can not initialize avast! engine: No such file or directory

how can i do for solving this problem??
thank you!!!
zim

avast! shared library can’t access 400.vps file, check permissons and /etc/avastengine.conf file