Index: dll/win32/shimgvw/shimgvw.c
===================================================================
--- dll/win32/shimgvw/shimgvw.c	(revision 61535)
+++ dll/win32/shimgvw/shimgvw.c	(working copy)
@@ -432,6 +432,7 @@
 
                     lpttt = (LPTOOLTIPTEXT)lParam;
                     idButton = (UINT)lpttt->hdr.idFrom;
+                    lpttt->hinst = hInstance;
 
                     switch (idButton)
                     {