=== modified file 'src/screenshot-dialog.c'
--- src/screenshot-dialog.c	2012-02-06 18:29:15 +0000
+++ src/screenshot-dialog.c	2012-09-17 18:28:28 +0000
@@ -286,11 +286,31 @@
   const gchar *file_name;
   gchar *tmp;
   GError *error;
+  int i = 0;
+  int front_slash = 47;
 
   file_name = gtk_entry_get_text (GTK_ENTRY (dialog->filename_entry));
 
   error = NULL;
   tmp = g_filename_from_utf8 (file_name, -1, NULL, NULL, &error);
+
+  if( strlen(tmp) > 0 )
+    {
+       for( i = 0; i < strlen(tmp); i++ )
+         {
+           if( tmp[i] == front_slash )
+             {
+                g_warning ("Invalid character '/' present in filename `%s'\n"
+                           "Falling back to default file.",
+                           file_name,
+                           "default value");
+
+                tmp = g_strdup (_("Screenshot.png"));
+                break;
+             }
+         } 
+    }
+
   if (error)
     {
       g_warning ("Unable to convert `%s' to valid UTF-8: %s\n"