Index: src/hid/gtk/gui-library-window.c
===================================================================
--- src/hid/gtk/gui-library-window.c	(revision 282)
+++ src/hid/gtk/gui-library-window.c	(revision 283)
@@ -388,8 +388,9 @@
 	SetMode (PASTEBUFFER_MODE);
 
   /* update the preview with new symbol data */
-  g_object_set (library_window->preview,
-		"element-data", PASTEBUFFER->Data->Element->data, NULL);
+	if ((PASTEBUFFER->Data != NULL) && (PASTEBUFFER->Data->Element != NULL) && (PASTEBUFFER->Data->Element->data != NULL))
+		g_object_set (library_window->preview,
+			"element-data", PASTEBUFFER->Data->Element->data, NULL);
 }
 
 /*! \brief Requests re-evaluation of the filter.