[Cdash] Problems upgrading cdash 2.0.2 to 2.2.2

[Mathias Bavay]

Hi!

I have upgraded my CDash 2.0.2 to 2.2.2. Everything went well, except 
that the database can not be updated: I have the message "*The current 
database schema doesn't match the version of CDash you are running*", I 
enter into the administration panel but when I click on "upgrade CDash", 
it does not do anything (it simply returns right away). I tried with 3 
browsers on two different platforms and still the same result... I saw 
in a previous post (nov. 2012) that it could be that the table 
"versions" would be missing, but I have it and it is correct.

Does anybody has any idea what I could do to upgrade my database 
structure? Thanks,

Mathias