How to change language in Sure step

Dear all,

I’d like to know how to change language in Sure Step 2010.

I already installed language pack.

“Preferences” tab > “Content Language” > “Installed” is checked about language that I installed.

I selected “Default” to language I want and I create new project.

But documents of project that I created are in English. (Not default language I selected)

Why??

Best regards,