Have you ever encounter such problem when you try to add a new category there is an error appear says that “You don’t have permission to do that” ? If yes, read on.
This happen to some wordpress user (including me) and until now there is no official patch for this error. It’s kinda annoying and it will limit your blogging activity as this error prevent you from adding a new category, modify an old post or even save your post for a draft.
I’ve tried many steps and follow all the help guides from other wordpress user in wordpress support forum and surprisingly none of it work out. Even if you update your wordpress to the latest version. Still it gave a same error. Gosh! 
tars:
Somehow I reached to SparePencil and he has released a mighty plugin that solve this problem. Cheers 
Just upload the plugin and activate it. Done.
You can download it here.
