Toribash
Original Post
NONE of my textures can upload suddenly....
Remember I made a thread about my new head refusing to upload? Well, now I made the rest of my textures have transparent backgrounds (it looks awesome) and I tried to upload and I am still getting that darn error message.

Upload Failed. Make sure the filetype is valid
Contact support for more information
Make sure they have the right dimensions [128x128], no compression (RLE), and, at least, one coloured pixel. I'd also suggest uploading them as .tga's but other formats are accepted too [.JPG, .JPEG, .PNG, .GIF, .TGA].