There is a typo in the file, fi-leep-xemacs.el from fi-2.0.19.

Here's the patch:

--- fi-leep-xemacs.el.~1~	Wed Feb 19 08:23:34 1997
+++ fi-leep-xemacs.el	Thu Feb 20 08:42:44 1997
@@ -190,7 +190,7 @@ Each entry is a list of:
 The function should be defined in this way:
 
    (defun fi:epoch-gesture-select (e)
-     (interactive "e")
+     (interactive \"e\")
      (fi::interrupt-process-for-gesture e ':select))
 ")
 

Sorry if this has been reported already.
I'm new to acl and am joining the list today.