wrong install 2.9.7 on Mountain Lion 10.8.4?

hello, I have tried to install Spamsieve a few times yet it does not seem to work.
after installing the plugin the three SpamSieve items in the Message menu fail to appear.
is this a known problem (related to folder permissions)…?
thank you

No, that’s not a known problem. What happens when you install the plug-in? Does it report an error?

Also, please see Sending in an Error Report.

It looks like, for some reason, the installer was not able to modify the preferences file (and the system didn’t report an error), but that problem has resolved itself now.