WordPress Editing Area Goes Blank Due to Subscribe by Email Plugin

My WordPress Post Editing Area Goes Blank Due to Subscribe by Email Plugin. The "Visual" mode is completely blank and enable to edit or write new post. But "Text" mode working.
Visual mode start working if I disabled the Subscribe by Email Plugin.
I think you need to update the plugin to work with latest WordPress install.
See this screenshot:
http://i.imgur.com/KL6zoZK.jpg