It's wierd, someone else said they get a .download file aswell, yet every time I download it from filetrip I get 11163-SaveManager.exe. It's been really puzzling me.
All i've done is converted a batch file I wrote into an exe, as if you link to a batch file on here it displays the contents as text instead of running it. There's also someone on here who may rip the batch file off. I've noticed the images from my guide have appeared on other sites, and in one case they watermarked them as their own, hence why it's an exe.
I have Kaspersky, and it says the file is clean. I expect FileTrip also scanned it for viruses when I uploaded it too.
Try this link
http://www.themolehole.eclipse.co.uk/SaveManager.exe if that works then it's an issue with FileTrip.
If that still doesn't work try a zipped copy
http://www.themolehole.eclipse.co.uk/SaveManager.zip perhaps your AV doesn't like you downloading an EXE file.
If that still doesn't work, I guess I could up the batch file.
edit: after doing a google, Google Chrome download manager gives the .download extension to incomplete download file. When the download is finished, download manager renames file with original file extension.
Quite a few sites also say Firefox also uses .download, but I believe it uses .part instead although in the same fashion.