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 -r1.28.2.11 -r1.28.2.12
--- openacs-4/packages/acs-templating/tcl/util-procs.tcl	1 Oct 2015 18:44:01 -0000	1.28.2.11
+++ openacs-4/packages/acs-templating/tcl/util-procs.tcl	6 Oct 2015 11:46:52 -0000	1.28.2.12
@@ -846,6 +846,7 @@
     @param subsite_id subsite_id to determine theming information
 
     @return path of the resource (without extension)
+    @author Gustaf Neumann
 } {
     
     if {![regexp {^/(.*)} $style path]} {
@@ -858,6 +859,14 @@
 	}
 
 	if {$theme_dir ne ""} {
+            if {![file isdir $::acs::rootdir/$theme_dir]} {
+                ns_log warning "ResourceDir '$theme_dir' does not exist under '$::acs::rootdir';\
+                    ignore parameter setting of subsite $subsite_id"
+                set theme_dir ""
+            }
+        }
+        
+	if {$theme_dir ne ""} {
 	    set path $theme_dir/$type/$style
 	    if {![file exists $::acs::rootdir/$path.adp]} {
 		unset path