blank page after login via admin.php

If you have actived any non-standard plugins or themes, disable them by deleting the files.

Also, try taking a look in your server’s error logs. This could shed some light on the issue. Where these can be found is dependent on your server setup or hosting provider, but usually they can be found somewhere in your hoster’s control panel (DirectAdmin, Plesk, etc).

Thanks.

I didn’t do anything after WP have been installed. It offers me a login page (admin.php), but I have never seen admin panel (modul) – after login I get a blank page.
How could I see corresponding plug-ins and themes?

Error log – I have looked at it and didn’t see anything related to WordPress from today, although problem occurs as it occured a week ago.
But, there is something related to if from a week ago….

[Wed Jul 14 09:15:56 2010] [error] [client 78.1.119.197] ModSecurity: Unable to retrieve collection (name “global”, key “global”). Use SecDataDir to define data directory first. [hostname “www.llrc.com”] [uri “/wpr/”] [unique_id “wcH@4tWFYwcADx4bTF8AAAAJ”]
[Wed Jul 14 09:15:56 2010] [error] [client 78.1.119.197] ModSecurity: Unable to retrieve collection (name “ip”, key “78.1.119.197”). Use SecDataDir to define data directory first. [hostname “www.llrc.com”] [uri “/wpr/”] [unique_id “wcH@4tWFYwcADx4bTF8AAAAJ”]
[Wed Jul 14 09:16:08 2010] [error] [client 78.1.119.197] ModSecurity: Unable to retrieve collection (name “global”, key “global”). Use SecDataDir to define data directory first. [hostname “www.llrc.com”] [uri “/wpr/index.php”] [unique_id “woNWOdWFYwcADx4tW1kAAAAO”]
[Wed Jul 14 09:16:08 2010] [error] [client 78.1.119.197] ModSecurity: Unable to retrieve collection (name “ip”, key “78.1.119.197”). Use SecDataDir to define data directory first. [hostname “www.llrc.com”] [uri “/wpr/index.php”] [unique_id “woNWOdWFYwcADx4tW1kAAAAO”]
[Wed Jul 14 09:16:09 2010] [error] [client 213.133.99.7] ModSecurity: Unable to retrieve collection (name “global”, key “global”). Use SecDataDir to define data directory first. [hostname “www.llrc.com”] [uri “/wpr/wp-cron.php”] [unique_id “wpHT7NWFYwcADx3BO@sAAAAG”]
[Wed Jul 14 09:16:09 2010] [error] [client 213.133.99.7] ModSecurity: Unable to retrieve collection (name “ip”, key “213.133.99.7”). Use SecDataDir to define data directory first. [hostname “www.llrc.com””] [uri “/wpr/wp-cron.php”] [unique_id “wpHT7NWFYwcADx3BO@sAAAAG”]
[Wed Jul 14 09:16:10 2010] [error] [client 78.1.119.197] ModSecurity: Unable to retrieve collection (name “global”, key “global”). Use SecDataDir to define data directory first. [hostname “www.llrc.com”] [uri “/wpr/”] [unique_id “wqOuUdWFYwcADx3CQPoAAAAH”]
[Wed Jul 14 09:16:10 2010] [error] [client 78.1.119.197] ModSecurity: Unable to retrieve collection (name “ip”, key “78.1.119.197”). Use SecDataDir to define data directory first. [hostname “www.llrc.com”] [uri “/wpr/”] [unique_id “wqOuUdWFYwcADx3CQPoAAAAH”]
[Wed Jul 14 09:16:25 2010] [error] [client 78.1.119.197] ModSecurity: Unable to retrieve collection (name “global”, key “global”). Use SecDataDir to define data directory first. [hostname “www.llrc.com”] [uri “/wpr/wp-admin/”] [unique_id “w31EDdWFYwcADx4bTG4AAAAJ”]
[Wed Jul 14 09:16:25 2010] [error] [client 78.1.119.197] ModSecurity: Unable to retrieve collection (name “ip”, key “78.1.119.197”). Use SecDataDir to define data directory first. [hostname “www.llrc.com”] [uri “/wpr/wp-admin/”] [unique_id “w31EDdWFYwcADx4bTG4AAAAJ”]
[Wed Jul 14 09:16:37 2010] [error] [client 78.1.119.197] ModSecurity: Unable to retrieve collection (name “global”, key “global”). Use SecDataDir to define data directory first. [hostname “www.llrc.com”] [uri “/wpr/wp-admin/admin.php”] [unique_id “xD5zqNWFYwcADx3CQQkAAAAH”]
[Wed Jul 14 09:16:37 2010] [error] [client 78.1.119.197] ModSecurity: Unable to retrieve collection (name “ip”, key “78.1.119.197”). Use SecDataDir to define data directory first. [hostname “www.llrc.com”] [uri “/wpr/wp-admin/admin.php”] [unique_id “xD5zqNWFYwcADx3CQQkAAAAH”]
[Wed Jul 14 09:16:38 2010] [error] [client 78.1.119.197] ModSecurity: Unable to retrieve collection (name “global”, key “global”). Use SecDataDir to define data directory first. [hostname “www.llrc.com”] [uri “/wpr/wp-login.php”] [unique_id “xESi8tWFYwcADx4rVzsAAAAM”]
[Wed Jul 14 09:16:38 2010] [error] [client 78.1.119.197] ModSecurity: Unable to retrieve collection (name “ip”, key “78.1.119.197”). Use SecDataDir to define data directory first. [hostname “www.llrc.com”] [uri “/wpr/wp-login.php”] [unique_id “xESi8tWFYwcADx4rVzsAAAAM”]
[Wed Jul 14 09:16:38 2010] [error] [client 78.1.119.197] ModSecurity: Unable to retrieve collection (name “global”, key “global”). Use SecDataDir to define data directory first. [hostname “www.llrc.com”] [uri “/wpr/wp-admin/css/login.css”] [unique_id “xEuLA9WFYwcADx27KhEAAAAB”]
[Wed Jul 14 09:16:38 2010] [error] [client 78.1.119.197] ModSecurity: Unable to retrieve collection (name “ip”, key “78.1.119.197”). Use SecDataDir to define data directory first.[hostname “www.llrc.com”] [uri “/wpr/wp-admin/css/login.css”] [unique_id “xEuLA9WFYwcADx27KhEAAAAB”]
[Wed Jul 14 09:16:38 2010] [error] [client 78.1.119.197] ModSecurity: Unable to retrieve collection (name “global”, key “global”). Use SecDataDir to define data directory first. [hostname “www.llrc.com””] [uri “/wpr/wp-admin/css/colors-fresh.css”] [unique_id “xEvRC9WFYwcADx4jUj8AAAAK”]
[Wed Jul 14 09:16:38 2010] [error] [client 78.1.119.197] ModSecurity: Unable to retrieve collection (name “ip”, key “78.1.119.197”). Use SecDataDir to define data directory first.[hostname “www.llrc.com”] [uri “/wpr/wp-admin/css/colors-fresh.css”] [unique_id “xEvRC9WFYwcADx4jUj8AAAAK”]
[Wed Jul 14 09:16:39 2010] [error] [client 78.1.119.197] ModSecurity: Unable to retrieve collection (name “global”, key “global”). Use SecDataDir to define data directory first. [hostname “www.llrc.com”] [uri “/wpr/wp-admin/images/logo-login.gif”] [unique_id “xFJXSNWFYwcADx29LeUAAAAC”]
[Wed Jul 14 09:16:39 2010] [error] [client 78.1.119.197] ModSecurity: Unable to retrieve collection (name “ip”, key “78.1.119.197”). Use SecDataDir to define data directory first. [hostname “www.llrc.com”] [uri “/wpr/wp-admin/images/logo-login.gif”] [unique_id “xFJXSNWFYwcADx29LeUAAAAC”]
[Wed Jul 14 09:16:39 2010] [error] [client 78.1.119.197] ModSecurity: Unable to retrieve collection (name “global”, key “global”). Use SecDataDir to define data directory first. [hostname “www.llrc.com”] [uri “/wpr/wp-admin/images/button-grad.png”] [unique_id “xFKd7tWFYwcADx4uXa4AAAAP”]
[Wed Jul 14 09:16:39 2010] [error] [client 78.1.119.197] ModSecurity: Unable to retrieve collection (name “ip”, key “78.1.119.197”). Use SecDataDir to define data directory first. [hostname “www.llrc.com”] [uri “/wpr/wp-admin/images/button-grad.png”] [unique_id “xFKd7tWFYwcADx4uXa4AAAAP”]
[Wed Jul 14 09:16:52 2010] [error] [client 78.1.119.197] ModSecurity: Unable to retrieve collection (name “global”, key “global”). Use SecDataDir to define data directory first. [hostname “www.llrc.com””] [uri “/wpr/wp-feed.php”] [unique_id “xRgwJdWFYwcADx27Kh4AAAAB”]
[Wed Jul 14 09:16:52 2010] [error] [client 78.1.119.197] ModSecurity: Unable to retrieve collection (name “ip”, key “78.1.119.197”). Use SecDataDir to define data directory first. [hostname “www.llrc.com”] [uri “/wpr/wp-feed.php”] [unique_id “xRgwJdWFYwcADx27Kh4AAAAB”]
[Wed Jul 14 09:16:52 2010] [error] [client 78.1.119.197] ModSecurity: Unable to retrieve collection (name “global”, key “global”). Use SecDataDir to define data directory first. [hostname “www.llrc.com”] [uri “/wpr/”] [unique_id “xR2VJtWFYwcADx4bTIEAAAAJ”]
[Wed Jul 14 09:16:52 2010] [error] [client 78.1.119.197] ModSecurity: Unable to retrieve collection (name “ip”, key “78.1.119.197”). Use SecDataDir to define data directory first. [hostname “www.llrc.com””] [uri “/wpr/”] [unique_id “xR2VJtWFYwcADx4bTIEAAAAJ”
“

i am having this same / similar problem

blank page arcoffeen.com/wp-admin

log in displays here arcoffeen.com/wp-login.php but after i login page goes blank and url doesn’t change from arcoffeen.com/wp-login.php

recent changes installed 2 plugins but i deleted the files from my ftp, didn’t help. Added AdSense code to theme header, deleted that, didn’t help. I just upgraded to the most recent version of WP before this happened.

help please