Index: openacs-4/packages/dotlrn-forums/tcl/dotlrn-forums-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/dotlrn-forums/tcl/dotlrn-forums-procs.tcl,v
diff -u -N -r1.16.2.5 -r1.16.2.6
--- openacs-4/packages/dotlrn-forums/tcl/dotlrn-forums-procs.tcl	14 Oct 2020 15:26:27 -0000	1.16.2.5
+++ openacs-4/packages/dotlrn-forums/tcl/dotlrn-forums-procs.tcl	23 Feb 2021 13:02:02 -0000	1.16.2.6
@@ -82,9 +82,14 @@
         Remove the applet from dotlrn
     } {
         db_transaction {
-            set package_url [site_node::get_package_url -package_key [my_package_key]]
-            if { $package_url ne "" } {
-                set node_id [site_node::get_node_id -url $package_url]
+            set package_key [my_package_key]
+            if {[db_0or1row get_node_id {
+                select min(node_id) as node_id
+                from site_nodes n,
+                     apm_packages p
+                where p.package_key = :package_key
+                  and p.package_id = n.object_id
+            }]} {
                 site_node::unmount -node_id $node_id
                 site_node::delete -node_id $node_id
             }