compiz --replace compiz (core) - Fatal: No composite extensi

HEy I am using kde 4.1 I installed compiz fucion but I can’t set it as my defualt window manager under session manager I don’t even have that option also I click compiz --replace
compiz (core) - Fatal: No composite extension
this is all I get I can’t get it to work in any way

Help page here
Compiz Troubleshooting - openSUSE

dude I have looked into that it doesn’t even start I click on the icon it goes to system tray but the window manager is still the defualt there are no effects nothing happens

Session Manager seems to have lost the setting for window manager
go to
Default applications- in the Desktop config