KDE translucent fails after upgrade

[Alain G. Fabry]

Hello,

I've portupgraded my xorg and kde, after this my kde translucent settings don't work
anymore and I receive a 'composite manager failed' while logging in.

If I disable the translucency, the error disappears but I would like it back working.

Running FreeBSD 6.2-RELEASE, X.Org X Server 1.4.0, KDE 3.5.8

in xorg.conf
------------
Section "Extensions"
    Option "Composite" "Enable"
EndSection
------------
In Xorg.0.Log
-----------
(**) Extension "Composite" is enabled


How can I solve this problem. (Or should I post this to the KDE or X.org support ?)

Am I forgetting something?

Thanks,

Alain