I have searched for this application, but it appears it's not available anymore. I have checked every possible website, but I couldn't find it. You have probably downloaded something else regarding the Avast notification.
The MasterTech developers appear to be the only one who can be contacted regarding this issue:
Tel: +1 909-348-7612
Fax: +1-909-348-7560
Email: sales@mastechusa.com