When I tried to import an animated gif, as I did with the actual file earlier on other computer, I get the message from the picture, in spanish "Error de After Effects: No se puede leer el origen. Compruebe la configuración y vuelva a intentarlo. ( 86 :: 1 )"; which translates to: "After Effects error: Cannot read from source. Please check the settings again. ( 86 :: 1 )"

I hope someone could help me because I don't think is much of a big deal. Thanks in advance.