Invalid Post Type error when attempting to filter and Bulk Edit posts

WP 3.8.1

Posts Categories:

1. News
   1.1 Press Release
   1.2 etc.
2. Blog
   2.1 Technology
   2.2 Around The World
   2.3 Eetc.

“Invalid Post Type” example:

Posts => Filter by “Press Release” + checkmark ALL + Edit + Apply + I change the author name + Apply:

wp-admin/edit.php?s=&post_status=all&post_type=Array

I basically want to change all Press Release author names. That’s it. But I keep getting “Invalid Post Type” error.

I’ve found a solution for me. A function from my functions.php file was in conflict with my filter admin.

I had to find where was my error, for that I just cut and paste my function one by one and test again and gain till I found my conflict function.

In my case I had to put my function in a conditional tag:

if(!is_admin()){

  //Your conflict function

}

So Your function will be executed only on the theme and not in your admin.