This is most likely caused by a bug in the application or by file corruption. To fix this, go to the Uninstall a program in Control panel and attempt to repair the software. All files will be restored to the default condition, then you can try running it again.
If you still encounter issues, reinstall the application and try again.
Additionally, you can get in touch with developers in order to obtain details about the status of the application: http://www.tensator-techcentre.com/index.php?id=20
