[solved]Too few arguments in /contao/install.php on line 949

[desperados]

Hi
Today a working contao 2.10.2 installation hangs
so I copied files for upgrading it to 2.11.2
then, when I go to install tool I've this error:

Warning: sprintf() [function.sprintf]: Too few arguments in /contao/install.php on line 949

#0 /contao/install.php(949): __error(2, 'sprintf() [outputAndExit('%sAtten...', '

and in error.log file I've this:

[27-Apr-2012 21:09:10] PHP Warning: sprintf() [function.sprintf]: Too few arguments in /contao/install.php on line 949
[27-Apr-2012 21:12:07] PHP Warning: sprintf() [function.sprintf]: Too few arguments in /contao/index.php on line 134

what damn is happening?

[ga.n]

it is a problem related to a missing translation string, upgrade your language files and try again

[xchs]

... and run the Contao-Check to check whether the update has been installed properly and is working!

[desperados]

contao-check was ok, so I tried to update everything (contao and extensions) and now it works
I didn't understand what was wrong, but now it's ok

[MicoX]

Hello
I have the same error Warning: sprintf() [function.sprintf]: Too few arguments.... contao/index.php on line 134.
But i have when i try to enter in the backend, when it say me to type user and pass.
My contao is 2.11.0 and this error is in server, in local i haven´t the error.
Do you know what is the problem?
Thanks in advance