I had installed it and tried to activate WP VideoTube - http://www.wpvideotube.com/
I followed http://wordpress.org/support/topic/194370?replies=18 and some other suggestions. Only one that really works for me to have more memory is increasing memory in wp-settings.php while I tried define... in wp-config.php and other suggestions. It doesn't work.
After I increased memory in wp-settings.php and hoped that WP VideoTube would works, but it still show fatal error with blank reason. I had looked it in google to try find solution. I couldn't find anything that would help. I tried use clean options to solve that issue. There is no way I can resolve this.
I use wordpress version 2.8.4 and running at http://www.visualvlogs.net
What I have plugins following are:
Alkivia Open Community Create and manage user communities in any WordPress blog.
All in One Video Pack
Capability Manager Manage user capabilities and roles.
Custom Admin Branding
Fast and Secure Contact Form
Kimili Flash Embed
Manage Your Posts Only
Riffly Video/Audio Comments M
Seesmic WordPress plugin Enables Seesmic video in WordPress.
Simple Ajax Shoutbox site
Viddler WordPress plugin
Viper's Video Quicktags
Who is Online
WP Ajax Edit Comments
WP Favorite Posts
WP Private Messages
WPVN - Username Changer