Here's a patch that fixes what appears to be a bug in the new function copy_gui_item_tree which was found by the MSVC compiler. 2000-03-25 Mike Alexander <mta(a)arbortext.com&gt; * gui.c (copy_gui_item_tree): Return a value in all cases Index: src/gui.c =================================================================== RCS file: /usr/CVSroot/XEmacs/xemacs/src/gui.c,v retrieving revision 1.10.2.24 diff -u -r1.10.2.24 gui.c --- gui.c 2000/03/24 19:32:01 1.10.2.24 +++ gui.c 2000/03/25 07:25:03 ＠＠ -613,6 +613,7 ＠＠ XCAR (rest) = copy_gui_item_tree (XCAR (rest)); rest = XCDR (rest); } + return arg; } else if (GUI_ITEMP (arg)) return copy_gui_item (arg);