Installing current version, stuck on installation screen

I am trying to install the current version of CS Cart. I am stuck on the installation screen. I created a blank database, because it wouldn't let me go any further without overwriting my current database. I don't want to overwrite it. We need our store back up as soon as possible. What am I doing wrong? I keep clicking “install” and I am still stuck on this page.

Can be Mysql problems )) can you install the blank 4.03 with sample data?