--- a/src/header_tag.cpp	2003-03-02 01:23:00.000000000 +0100
+++ b/src/header_tag.cpp	2009-07-13 22:54:21.000000000 +0200
@@ -54,7 +54,7 @@
 {
   size_t bytesUsed = ID3_TagHeader::SIZE;
 
-  if (_info->is_extended)
+  if (_info && _info->is_extended)
   {
     bytesUsed += _info->extended_bytes;
   }