I've installed maya 2011 before that one, can it be the problem itself ?"Save configuration file failed."
Your Maya configuration is corrupted. You need to delete it, so it can be created again.
Try deleting the following folder.
Windows: My Documents\maya\<version number>
Mac: <Home folder>\Documents\maya\<version number>
I have uninstalled Maya 2010 64bits, and i have deleted all preferences and folders.You have to give us time. Uninstall Maya, delete the preferences folder, delete the Autodesk folder in your program files, then reinstall. If it pops up asking if you'd like to copy preferences over from an older version of Maya, click no. This causes problems.