When I click on the edit thumbnail section, the left window where the main image should be shown remains blank. 1 person who had the same problem had a plugin clash. I have deactivated the only 2 plugins I currently have working and still nothing. I even tried deactivating the theme I am using to make sure nothing in it is the issue. Tried it with the TwentyEleven theme and it still would not show.
Anyone else had this issue or have any idea how to fix it?