I have tried finding this error by reproducing it, but it's impossible, because the only download available is password-protected, and the official website is in a foreign language. I recommend reinstalling the application or uninstalling it using Revo Uninstaller and then installing it back. Revo will delete leftovers, registry items, and temporary files.
Once you finish the job with Revo, reboot the PC and then install the main software.