I've just recently (yesterday) done a complete reinstall of the CS 767 and it is doing really well on the Flight Plan. But there are a few bugs with the CDU/FMS that can be a real pain to do the work around.

See my Topic Fix for missing T/D in CDU/FMS for one of the problems I am referring to.

Even so, I am still really enjoying flying the Captain Sim 767. ;)