[Theme: Neuro] Problem with the sidebar

I have the following problem with the sidebar….
In one of the pages of my website, I don’t want to display any sidebar, so, I use this plugin: https://wordpress.org/extend/plugins/widget-logic/
And it works, but, in the page is showing this…
http://wstaw.org/m/2012/07/10/problem.png
how can remove the sidebar?