My b2evolution Version: 1.9.x

I just recently upgraded B2evolution and when I try to access the /admin to edit blogs I get the following message. The blogs look good but I can't access the admin to edit them.

Notice: Undefined variable: admin_dirout in /home/victorhu/public_html/blogger/admin/_header.php on line 17

Notice: Undefined variable: core_subdir in /home/victorhu/public_html/blogger/admin/_header.php on line 17

Warning: main(/home/victorhu/public_html/blogger/admin///_main.php) [function.main]: failed to open stream: No such file or directory in /home/victorhu/public_html/blogger/admin/_header.php on line 17

Fatal error: main() [function.require]: Failed opening required '/home/victorhu/public_html/blogger/admin///_main.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/victorhu/public_html/blogger/admin/_header.php on line 17

it is installed in vhvii.com/blogger and the admin is at www.vhvii.com/blogger/admin

Any ideas that could help me get back to editing my blogs ?

Thanks

Delahoya