wrong format for the sprite.
by default sprites are 3x4 cells. and if you install a plugin to give you the ability to have more frames in the sprite, then you have to follow the plugin instruction exactly to use it.
But as a guess you didn't even use such a plugin.
However, NEVER assume that someone else can see what you mean, ALWAYS describe the error in text for whoever wants to help.
There have been dozens of cases where no real error was visible on the screenshot, resulting in "20 questions" to even find out what the OP means.