Enough people asked me how to make an animated gif, i decided to build a tutorial and post it to make it easier for all of us! Good luck! There is a second part so don't miss it.
I just have to thank you. Without this tutorial, I would have never known about this GIF animator, and even if I did, I would still have to figure out how to use it. So, THANK YOU!!!
It just means it can't read the file... have you done anything with it? changed it? uploaded it or downloaded it from the internet? I'm sorry to tell you I dont think there's a way you can fix it, if the file is bad then the file is bad.
Search the internet for a program like Open Canvas or some other freebee. Anything that can open your pictures and save them as gifs will work, you dont have to be able to draw on it.