Index: openacs-4/packages/xowiki/tcl/xowiki-www-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/tcl/xowiki-www-procs.tcl,v
diff -u -r1.199.2.2 -r1.199.2.3
--- openacs-4/packages/xowiki/tcl/xowiki-www-procs.tcl	26 Nov 2008 23:05:41 -0000	1.199.2.2
+++ openacs-4/packages/xowiki/tcl/xowiki-www-procs.tcl	8 Jan 2009 15:38:33 -0000	1.199.2.3
@@ -321,15 +321,25 @@
     set action_vars [expr {$new ? "{edit-new 1} object_type return_url" : "{m edit} return_url"}]
     #my log "--formclass=[$object_type getFormClass -data [self]] ot=$object_type"
 
-    # Use always the name of the frist xowiki instance (required for sub-packages,
-    # which might not have the script dir)
-    set first_instance_id [::xowiki::Package first_instance -party_id [::xo::cc user_id] -privilege read]
-    if {$first_instance_id ne ""} {
-      ::xowiki::Package require $first_instance_id
-      set folder_spec [list script_dir [$first_instance_id package_url]]
-      #my msg using-[$first_instance_id package_url]-for-[::xo::cc user_id] 
+    #
+    # Determine the package_id of some mounted xowiki instance to find
+    # the directory + URL, from where the scripts called from xinha
+    # can be used.
+    if {[$package_id info class] eq "::xowiki::Package"} {
+      # The actual instance is a plain xowiki instance, we can use it
+      set folder_spec [list script_dir [$package_id package_url]]
+    } else {
+      # The actual instance is not a plain xowiki instance, so, we try
+      # to find one, where the current user has at least read
+      # permissions.  This act is required for sub-packages, which
+      # might not have the script dir.
+      set first_instance_id [::xowiki::Package first_instance -party_id [::xo::cc user_id] -privilege read]
+      if {$first_instance_id ne ""} {
+        ::xowiki::Package require $first_instance_id
+        set folder_spec [list script_dir [$first_instance_id package_url]]
+      }
     }
-    
+
     if {$fs_folder_id ne ""} {lappend folder_spec folder_id $fs_folder_id}
     
     [$object_type getFormClass -data [self]] create ::xowiki::f1 -volatile \