Hello guys,
I hust want to warn you that the latest CB10 SP 2 (About dialog shows CB version 10 July 2009) has quite an annoying bug. It may destroy your databases, so please make a backup before you make anything with your databases.
In short what is the bug - try the following
1) create new database or use existing one in CBH format
2) start a new game
3) enter some moves and then insert a null move at the end as a main line (for example 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 null)
4) then insert 2-3 sublines at the level of the null move (for example 4...Bc5 and 4....Nf6 or even 4...Nxd4)
5) save the game and close the game window
6) u will see in the game list that your game has some symbols like v, vc, vs or something like that depending on what you entered
7) now open again the game. You will see that your variations dissapeared
This is the way how I lost 4 hours of hard analysis work on a very interesting line...
My biggest problem arose because i decided that something is wrong and started integrity check, which totally damaged my database.
Later i tried the same just for testing and after i saw the same result, simply opened the database in CB9 and everything was there

.
So be careful and always make a backup of your things.