Search references Window mising


I have a patron who runs Endnote X1,  when he tries to Search References in his Library, using either the file option or the Binoculars link, , the Search Window no longer appears.  Any ideas?  I have suggested he re-install Endnote as I can’t find any help re this problem. 


Has the person tried setting the window display preference? Go to the Endnote toolbar, select WINDOW then any of the display options (cascade, tile vertically, tile horizontally).

There’s also some archival material concerning the search window disappearing: