I just wanted to chime in here. Not all Admin area blank pages are caused by bad plugins. I experienced the blank wall after upgrading from 2.5 and then trying to log into /wp-admin/
My plugins were fine, but I had modified my custom theme’s functions.php file to register a new side bar. Per clickit’s post (4ish) I had an extra set of <?php ?> tags that caused my admin area to crash.
Thanks WP and all the forum users who post here.
@leah….did you try the support forum for the gallery plugin?
