I am using Widget Logic in several places on my site with no problems.
I recently added a widget to the Header Right widget area. I entered is_page() because I want Trackable Social Share icons to display on all pages. The icons display on every page EXCEPT the blog page and single blog post pages.
The theme is Genesis/Prose, and the URL is http://jamesbendellattorney.com.
I removed is_page() and tried different code to see if I could get the icons to display on the blog pages. I tried:
is_page( 'Blog' )
None of these would display the icons on the blog pages.