Admin cannot preview posts

Hi

I came up against a very strange issue. On my 3.2 WordPress, only the SuperAdmin can preview a post. All other users below when clicking on Preview button receive the error: “You do not have permission to preview drafts.”.

That is very strange! Any idea?

FYI

here are the WPMUDev plugins installed:

e-Newsletter

Create, manage and send beautiful HTML newsletters to users and subscribers from right inside your WordPress dashboard. Installation & Use Instructions »

Get Support » 1.0.2 1.0.2

Easy Google +1

Add the Google +1 button to your site and let your visitors tell the world how cool your site is! Installation & Use Instructions »

Get Support » 1.0.3 1.0.3

Membership

The most powerful, easy to use and flexible membership plugin for WordPress, Multisite and BuddyPress sites available. Offer downloads, posts, pages, forums and more to paid members. Installation & Use Instructions »

Get Support » 2.0.7 2.0.7

Pop Up!

Allows you to display a fancy popup (powered as a popover!) to visitors sitewide or per blog, a *very* effective way of advertising a mailing list, special offer or running a plan old ad. Installation & Use Instructions »

Get Support » 3.0 3

Ultimate Facebook

The only Facebook plugin you will ever need: Autopost to your wall or fan page, registration and login, Facebook comments, BuddyPress profiles support and more. Installation & Use Instructions »

Get Support » 1.0.9 1.0.9

Update Notifications

This required plugin lets you know when your WPMU DEV plugins and themes need to be updated, and even allows you to auto-update them… critical for security and functionality! Installation & Use Instructions »

Get Support » 2.1.3 2.1.3