WordPress MU

Hello. Please help me!

I moved my wordpressMU installation to another host.
All it's working (all blogs) but the main website don't appear. If I am logged as an administrator, the website works but wp-signup.php don't work (blank page if somebody want to sign up). If I am logged out, the website it's not working again. Can you help me please? Thank you very much.

if you're not more specific, it's really difficult to help you. "don't work" or "is not working" is not a description of your problem.
What's not working ? What kind of error do you get ? 404 ? 500 ? Nothing ? A wordpress error ? did you look in your webserver's error log ?

No error, just the page is blank. You can see here: http://www.blogulmeu.ro

I see a blog...

Yep, I see a blog also. One of the posts even has two comments so obviously other people can see the blog as well. ;)

Yes, you can see the blog because I fix it. It was a plugin (Adsense plugin), before to move the blog it worked OK, but after that... I can't use my blog. Now it's ok but I have another problem with a mysql error:

WordPress database error: [Table 'database_name.wp_143_options' doesn't exist]
SELECT option_value FROM wp_143_options WHERE option_name = 'blogname' LIMIT 1

WordPress database error: [Table 'database_name.wp_143_options' doesn't exist]
SELECT option_value FROM wp_143_options WHERE option_name = 'siteurl' LIMIT 1

WordPress database error: [Table 'database_name.wp_143_options' doesn't exist]
SELECT option_value FROM wp_143_options WHERE option_name = 'post_count' LIMIT 1

Any solutions? Thank you.