Index: openacs-4/packages/acs-templating/tcl/util-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-templating/tcl/util-procs.tcl,v
diff -u -r1.41 -r1.42
--- openacs-4/packages/acs-templating/tcl/util-procs.tcl	3 Nov 2018 19:52:29 -0000	1.41
+++ openacs-4/packages/acs-templating/tcl/util-procs.tcl	19 Nov 2018 18:19:12 -0000	1.42
@@ -705,7 +705,8 @@
 
         if {$theme_dir ne ""} {
             set path $theme_dir/$type/$style
-            if {![file exists $::acs::rootdir/$path.adp]} {
+            set lookup_path [expr {[file extension $path] eq "" ? "${path}.adp" : $path}]
+            if {![file exists $::acs::rootdir/$lookup_path]} {
                 unset path
             }
         }