Index: openacs-4/packages/acs-tcl/tcl/apm-install-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-tcl/tcl/apm-install-procs.tcl,v
diff -u -r1.126.2.8 -r1.126.2.9
--- openacs-4/packages/acs-tcl/tcl/apm-install-procs.tcl	13 Jul 2020 12:02:33 -0000	1.126.2.8
+++ openacs-4/packages/acs-tcl/tcl/apm-install-procs.tcl	15 Jul 2020 20:10:35 -0000	1.126.2.9
@@ -1697,6 +1697,11 @@
     } else {
         lappend types_to_retrieve "data_model_upgrade"
     }
+
+    if {![apm_package_enabled_p $package_key]} {
+        ns_log notice "apm_data_model_scripts_find: ignore upgrade attempt for disabled package $package_key"
+        return ""
+    }
     set data_model_list [list]
     set upgrade_file_list [list]
     set ctl_file_list [list]