ChDUP on "[Plugin: White Label CMS] can't upload medias white White Label active"

Hi.

I'm using White Label on a WP 3.7.1
When I want to upload a media, it blocks on message "in progress"
When I want to upload a page or an article there 's an error message
"a problem occured, please try again later"

When I desactive White label extension, no problem.

Thanks for your help

http://wordpress.org/plugins/white-label-cms/