Since updating my WP Multisite to 3.4, my subdomain admins get the 'Cheatin’ uh?' error whenever trying to insert images into posts / custom posts. It seems to be a theme issue.
So after trying pretty much all the solutions I found on google, I found the solution to my problem:
Its possible that your theme uses some other theme options framework. If this is the case, you need to find the call to media uploader window and remove the
post_idfrom it to fix the issue. The code will look something like this:
Replace it with this code:
More fixes here: http://www.agentwp.com/fix-cheatin-uh-error-in-wordpress
I was trying to upload a logo on a new theme-Kept getting the cheatin uh? But after sometime i did solve this problem by http://gauravseo.blog.com/2012/08/06/how-to-solve-cheatin-uh/