I recently have moved a wordpress install to a new setup. I used the existing database as its within the existing network.
I have a add_image_size added to my functions. This worked on the previous server. My images are uploading fine, however none of my thumbnail generation isn't working. This leads me to believe that there might be a missing php component required. ie. GD Library ???
Also for some reason, when I reupload the same image in the wordpress admin, the file name isn't getting incremented / uploaded again. It just reloads the same file.