spamassassin sa-update problem

[AlessioP]

hi,
I'm using plesk 9.5.2.
why when running sa-update spamassassin return this error?
"Argument '1.26_01' isen't numeric in subroutine entry at in sa-update line 80"
investigating a problem seems tar archive, has some problems the current version?
how can I update the spamassassin filter rules?

 

[AlessioP]

nobody answer me? no one who has my same problem? but how is this possible? please answer me