Installation problem

I have a problem with a clean install onepage template. I proceed exactly as manual, but when starting the installation wizard at your_page.com / index.php I can not get to the next step - valid for both version 2.5 and 3.0

as you can see in the picture,

after selecting the language remains on the loading bar

That are just warnings, level down error reporting level in joomlas global configuration. Warning messages break layout.

well, but what can I do to installer went on to the next step?

Check if that files form that messages are relay there if not maybe you not all files were copied via FTP. Best if you have cpanel to use its file manager to upload whole zip then unpack it there (cpanel file manager has that option)

Second check if maybe permissions are restrictive, set CHMOD of joomla folder and copied files to 755

THX, problem was in one missing file