Blank admin page, erros in catalog, i've searched for a solution, but can'

Thank you in advenced for any help.
i'm getting a blank page on my admin screen and on my catalog, i've managed to make the erros on catalog to appear, but i just can't do that on the admin, if i use the Debug Error-Logging Tool the log just don't appear in cache folder (i've put 777 on it). if i use the ```

on the admin/includes/local configure.php it doesn't work. It worked for my catalog folder, but not for the admin.
and them i got this erros in catalog:

Notice: Undefined variable: seo_urls in /home/casasnos/public_html/loja3/includes/functions/html_output.php on line 24

Notice: Undefined property: keep_in_memory in /home/casasnos/public_html/loja3/includes/classes/seo.url.php on line 1073

Notice: Undefined property: keep_in_memory in /home/casasnos/public_html/loja3/includes/classes/seo.url.php on line 1073

Notice: Undefined property: keep_in_memory in /home/casasnos/public_html/loja3/includes/classes/seo.url.php on line 1073

Notice: Use of undefined constant FILENAME_NEWS_RSS - assumed 'FILENAME_NEWS_RSS' in /home/casasnos/public_html/loja3/includes/classes/seo.url.php on line 186

Notice: Use of undefined constant FILENAME_NEWS_ARCHIVE - assumed 'FILENAME_NEWS_ARCHIVE' in /home/casasnos/public_html/loja3/includes/classes/seo.url.php on line 189

Notice: Use of undefined constant FILENAME_NEWS_INDEX - assumed 'FILENAME_NEWS_INDEX' in /home/casasnos/public_html/loja3/includes/classes/seo.url.php on line 192

Notice: Undefined variable: _sid in /home/casasnos/public_html/loja3/includes/classes/seo.url.php on line 322

Warning: Cannot modify header information - headers already sent by (output started at /home/casasnos/public_html/loja3/includes/functions/html_output.php:24) in /home/casasnos/public_html/loja3/includes/init_includes/init_templates.php on line 78

what this mean? i have the ultimate seo urls instaled on my store.
Now, what i consider the creppiest part, this blank pages come from nowhere! i didn't got a changed made on my files, in the morning i looked at my site and it was okay, in the afternoon i looked again, Blank.

i have searched everywhere for a solution, but can't find it.
thank you for any help and sorry for my poor english.

Turn off your SEO Url module and or ask in the appropriate thread where there is support for the SEO module

kobra:

Turn off your SEO Url module and or ask in the appropriate thread where there is support for the SEO module

thank you for the reply.
I wish i could, because, as i described up there, i can't enter in my admin page.

Peek in phpMyAdmin at the configuration table ... see if there are settings in there, probably towards the end of the table, if you browse it where you can enable/disable the feature ...

Ajeh:

Peek in phpMyAdmin at the configuration table ... see if there are settings in there, probably towards the end of the table, if you browse it where you can enable/disable the feature ...

Thank you for the reply Ajeh,
i did what you say, in the configuration table i changed the option "enable seo url" to false but i'm still getting errors

Notice: Undefined variable: seo_urls in /home/casasnos/public_html/loja3/includes/functions/html_output.php on line 24

Notice: Undefined property: keep_in_memory in /home/casasnos/public_html/loja3/includes/classes/seo.url.php on line 1073

Notice: Undefined property: keep_in_memory in /home/casasnos/public_html/loja3/includes/classes/seo.url.php on line 1073

Notice: Undefined property: keep_in_memory in /home/casasnos/public_html/loja3/includes/classes/seo.url.php on line 1073

Warning: Cannot modify header information - headers already sent by (output started at /home/casasnos/public_html/loja3/includes/functions/html_output.php:24) in /home/casasnos/public_html/loja3/includes/init_includes/init_templates.php on line 78

what could that be?

I just made a new web site and coppied some tables of the database. i dunno what happened. i don't installed the ultimate seo urls because it might be the problem of my site, i installed the simple seo urls, it looks better.

Thank you everybody for the help