Please help

The update button under Customer User Management is not working it gives me the error below

Please advise

Error: Not supported for this module!

Comment:        

Bug Report:      

Traceback:        ERROR: OTRS-CGI-10 Perl: 5.8.7 OS: linux Time: Tue May  2 11:08:16 2006

Message: Not supported for this module!

Traceback (12388):

   Module: Kernel::System::CustomerUser::LDAP::CustomerUserUpdate (v1.24) Line: 370

   Module: Kernel::System::CustomerUser::CustomerUserUpdate (v1.22) Line: 328

   Module: Kernel::Modules::AdminCustomerUser::Run (v1.37 ) Line: 191

   Module: Kernel::System::Web::InterfaceAgent::Run (v1.8) Line: 652

   Module: ModPerl::ROOT::ModPerl::Registry::opt_otrs_bin_cgi_2dbin_index_2epl::handler (v) Line: 47

   Module: (eval) (v1.80) Line: 203

   Module: ModPerl::RegistryCooker::run (v1.80) Line: 203

   Module: ModPerl::RegistryCooker::default_handler (v1.80) Line: 169

   Module: ModPerl::Registry::handler (v1.99) Line: 30