Forum .LRN Q&A: Response to problems in subject/class and club-new on postgres

Arjun, I jsut updated from CVS. create community stll has a bug:
Selection did not return a value, and no default was provided
           while executing
       "db_string select_node_id {}"
           (procedure "get_type_node_id" line 2)
           invoked from within
       "get_type_node_id $community_type"
           invoked from within
       "if {[empty_string_p $parent_community_id]} {
                       set parent_node_id [get_type_node_id $community_type]
                   } else {
                     ..."
           ("uplevel" body line 33)
           invoked from within
       "uplevel 1 $transaction_code "
           (procedure "db_transaction" line 1)
           invoked from within
       "db_transaction {
                   set user_id [ad_conn user_id]
                   set community_id [package_instantiate_object -extra_vars $extra_vars $object_ty..."
           (procedure "dotlrn_community::new" line 25)
           invoked from within
       "dotlrn_community::new  -community_type [community_type]  -object_type [community_type]  -pretty_name $pretty_name  -description $description  -parent_..."
           (procedure "dotlrn_club::new" line 6)
           invoked from within
       "dotlrn_club::new  -description $description  -pretty_name $pretty_name  -join_policy $join_policy"
           invoked from within
       "if {[form is_valid add_club]} {
           form get_values add_club  pretty_name description join_policy referer