Oh, by the way there is also a free Amiga Bouncing Ball icon in Win, Mac and Png formats that I also did in Blender in my places that you can download.
Just look in my gallery (View Gallery link at the right of the Deviantart page) or in my folder.
If you have any problems decompressing the zip file it is not necessarily that the file is damaged. It could be that your unzipping program cannot decode LZMA encoding. I used it cause the file size is much smaller (about 16 megs).
There are many unzipping programs that can decode LZMA like 7Zip which is free (open source), very popular and is available also as portable, of course this is for Windows.
The portable version is available here:
Anyway I created an alternate zipped file which uses the more common deflate encoding (with a larger file size of about 20 megs) in my folder.
This is the direct link to that file:
Try that and tell me how it goes.