Hi,
after the activation is the dashboard or plugin.php only a white site.
And in the ErrorLog at my Provider is not a entry.
In the FAQ of the German WordPress Support is a notice, that the associated with another plugin.
After a few tests I found out the Social Bookmarking and Social Media Widget is causing problems. But after the deactivation is the problem still exist with your plugin.
I test it today with a nother theme.