--- mstools/samples/showdib/drawdib.c	2018/08/09 18:23:47	1.1.1.4
+++ mstools/samples/showdib/drawdib.c	2018/08/09 18:26:04	1.1.1.5
@@ -953,8 +953,11 @@ HANDLE RealizeDibFormat (
 INT ErrMsg (PSTR sz,...)
 {
     CHAR ach[128];
+    va_list args; 
+	
+    va_start(args, sz); 
 
-    wvsprintf (ach, sz, (LPSTR)(&sz+1));   /* Format the string */
+    wvsprintf (ach, sz, args);   /* Format the string */
     MessageBox (NULL, ach, NULL, MB_OK|MB_ICONEXCLAMATION|MB_APPLMODAL);
     return FALSE;
 }