Cant Edit products or pages in my admin anymore

I have just upgraded to 4.0 and now I am having an issue with the admin and editing products. When I go into a product and click to edit a grey overlay comes over the screen I can then click again and it goes away. I can click update or add but I cant edit in the text box on anything.

I tried this (below) and it did not resolve the issue

https://wordpress.org/support/topic/tb_load-freezing-overlay-thickbox-on-pages-edit

Comment this block in wp-e-commerce/wpsc-admin/js/admin.js
/*jQuery(“a.thickbox”).livequery(function(){
tb_init(this);
});*/

as this seems to be causing the issue

<div id=”TB_overlay” class=”TB_overlayBG”></div>
<div id=”TB_window”></div>
<div id=”TB_load” style=”display: block; “><img src=”http://www.bodyblueprint.com/wp-includes/js/thickbox/loadingAnimation.gif&#8221; width=”208″></div>

Any and all help is greatly appreciated

Conor

https://wordpress.org/plugins/wp-e-commerce/