Index: generic/predefined.xotcl
===================================================================
diff -u -r90f13fe04f5c707be3b56808a8a7992adab1855f -r7e095cf77bbf64283e4ee1cfaa6f8ebbbbafa348
--- generic/predefined.xotcl	(.../predefined.xotcl)	(revision 90f13fe04f5c707be3b56808a8a7992adab1855f)
+++ generic/predefined.xotcl	(.../predefined.xotcl)	(revision 7e095cf77bbf64283e4ee1cfaa6f8ebbbbafa348)
@@ -474,7 +474,7 @@
 }
 
 ::xotcl::Object instproc abstract {methtype methname arglist} {
-  if {$methtype ne "proc" && $methtype ne "instproc"} {
+  if {$methtype ne "proc" && $methtype ne "instproc" && $methtype ne "method"} {
     error "invalid method type '$methtype', \
 	must be either 'proc' or 'instproc'."
   }