Malware packaged with TableTools exports

Whenever I download .csv files using the TableTools extension, my antivirus (and the antiviruses of clients that use our web application) detects Adware and alerts me.

Here's the link it sends to us:
http://www.microsoft.com/security/portal/threat/encyclopedia/entry.aspx?name=SoftwareBundler%3aWin32%2fGoFileExpress&threatid=206387

Any ideas why this occurs on the TableTools exports (csv or excel), or is it a picky antivirus issue?