You have a very old application, because on the developer's website major version 8 has been released that is compatible with latest versions of the Windows operating system as well.
To download the latest version, follow the direct download link posted below. Please keep in mind that this is a trial version of the software and besides the normal installation procedure, it will install additional components for the software to work normally.
Note: Typically, this link is provided to users after they register, but I see it's public and can be accessed from any location, therefore click it and save it to your PC.
