No, I'm downloading it through the link you gave me after purchasing.
Seems is a problem with spaces in the directory. Can you remove the spaces in previous directories so the full dir of PixelFXdesigner app is without them and test again to confirm?
The bug makes that if in the app name or full directory you have any space the gif export not will work. So, make sure your full directory is without spaces like:
"C:\Tools\PixelFXdesigner" or similar.
If your directory is like: "C:\My Tools\Pixel FX Designer" will fail.
We will fix this bug in next update, sorry for the inconvenience.