Blank page after logging in

[iandunn]

I did a new install of 2.5.1 on Windows 2003, PHP 5.2.0, MySQL 5.0.22.

I start out going to ​http://example.com/wp-admin/ and get redirected to ​http://example.com/wp-login.php?redirect_to= to login, then I enter my username and password and hit submit and it goes to ​http://example.com/wp-login.php, which is blank. If I then manually go to ​http://example.com/wp-login.php or ​http://example.com/wp-admin it takes me to the dashboard just fine.

PHP's display_errors is On, and I'm not getting any errors, just a blank screen.

There are a lot of posts about this on the support forums, but no solid fixes. The only plugin I'm running is Askimet, and the problem happens even when it is deactivated. It happens with the default theme too.

[MattyRob]

Are you still getting this problem with latest stable (2.6.2) or latest trunk?

Have you checked:
for plugin errors
for excess white space at the end of the wp-config.php file
for cookie issues