Sounds like a web host problem. Your best bet is to check with technical support for your host.

Yes, i guess that too, but i asked them in the support forum and no response. i guess i have to tell them more about. But if i'm not familiar with the b2evo engine and how it works - what should i tell them ???
If i enter b2evo/admin/ default should open index.php where i can find:
require dirname(__FILE__).'/b2edit.php' - i dont know nothing about php, so I asked here for help.
My question is: for opening the login page what operations are made? (open db, read xx record etc.) somewhere is a problem. Support in that page is great and they are in some way flexible - they can relax the security settings for some accounts, but what shoud i ask for ???

If you want to test something yourself, try thist. Create a file called phpinfo.php and put this in it:

<?php
phpinfo();
?>

Then, upload that and post a link to it here. If it also generates a blank page, then your problem is the PHP on your host's server and it has nothing to do with b2evolution.

Have you tried index.php instead of .html?

sry about mistake it was index.php not html

edited:
phpinfo path: http://crom.110mb.com/phpinfo.php

I wanna thank you for quick response, is very encouraging too see that.
I want a multiblog to install on a a free hosting server for a project who involve 4 schools for kids with disabillities from 4 diferend country.
ATM is no money for this project so it must be a free hosting. I stoped on this one because they offer 110 mb and 5gb traffic, and storage will be free exteded to 750 mb when you reach that 110mb limit, but i tried also mu wordpress and I have the same problem after install - blank page, if i cant resolve that i guess i have to find another provider.

It's not advertising at all, but the offer is very tempting, so maybe other ppl will have the same problems with this server.
Thanks for help.

This sounds like a fatal php error that does not show up because of display_errors=off in the php.ini.

Please edit your php.ini and set

error_reporting=E_ALL
display_errors=on

there.

.. or take a look at the server's error log first.

Thanks a lot for info, i just send to the support team of the server your comment, i hope i will receive a quick response.

Thanks a lot !!

You could do this yourself through using a .htaccess file. No need IMHO to contact the support.

However, in a .htaccess file you would write:

php_flag display_errors on
php_value error_reporting 2047

server does not suppot this