4.04 : Blank Page In User Cp And Profiles

[MedellinStyle]

After update, Im recieving blank pages in user cp and profiles.

I already did:

1- reupload all files.
2- deleted .htaccess
3- changued config to basic urls.
4- disabled hooks.
5- update theme counters.
6- created a new no parent style.

NO LUCK AT ALL. Also facebook implementation doesnt work... once active, website became slugglish and icons and options to check to "send to facebook" doesnt appear.

but at least I need to fix horrible blank pages. Any help would be appreciated.

Thanks