Hello zilog,
Thnaks for your responsion.
I have downloaded the relative software avast4workstation-1.2.0-1.i586.rpm by your gived URL. I have uninstalled the original avast version. And I use rpm command and add the "-nodes" parameter for installing this new software. The process of the install is sucessful.But I input "avast" or "avastgui" in the command lines.There occurs different message that is "avast: can not initialize avast! engine:vps file was destoryed".
Finally I install libavastengine-4.7.4-1.i586.rpm software, I can not resolve it also.
please, check the 400.vps file (size, contents, location). The file must be some ±15MiB and must end with ASWSignd. Also, make sure that the /usr/lib/libavast* stuff was uninstalled (otherwise, workstation will try to use those system-wide DSOs).
There might be more 400.vps files (global, per-user), so try "find / -type f -name 400.vps" to fing them all.
regards,
PC