Out of curiousity, I tried your download links.
The first two didn't work- browser just loaded an error page. The third led me to the download site, but I didn't download the tool. After a few seconds, my computer was convinced it had a virus, and offered to do a scan, which led to a web-page imitating a scan. I didn't allow it to complete or anything- in fact I stopped it as soon as I noticed, and after doing a full-scan on my computer, nothing seems to be wrong. But, I'm still skeptical. As such, I've removed the links. If this had nothing to do with you, the perhaps consider alternate filesharing sites? giga-something doesn't seem trustworthy to me- not now, anyway.