Hello, I just update our site to WP 3.8.1 and I've found Nextgen plugin to be causing a blank screen when trying to load the admin area.
Firstly I've deactivated all plugins, and was activating them one by one to check the ones that caused the problem. I only identified Nextgen to cause the blank page issue, either when being the only module activated and when it was activated with the other modules too.
Then I tried to upgrade the plugin to the last version (v2.0.40) to see if it solves the issue, but it still persists.
Waiting for your indications.
Thank you for your assistance!