Admin section showing white page

Hello,

I am having a very strange problem when I activate and use the plugin, mainly for the share bar, the front end works fine and the bar shows at where I want it to be but the admin section starts showing white page (source: blank) without any notice/warning/error, instead of login page or other internal pages.

Could you please suggest what is the solution for this as I am unable to login to admin section when the plugin is active.

AZ