Hi,
Follow the link to run the program in clean boot and check:
A clean boot helps eliminate software conflicts. Article below describes how to troubleshoot problems in Windows 7 by performing a clean boot. This article also describes how to start the Windows Installer service and how to reset the computer so that it starts as usual. To configure your computer to clean boot refer the following link.
How to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7
http://support.microsoft.com/kb/929135
Note: After you have finished troubleshooting, follow step 7 in the article to boot to normal startup.
If the program does not run in clean boot try to uninstall and reinstall the program and check, if the issue still persists I would recommend you to contact 123dvd support by clicking on the link http://www.123copydvd.com/support/index.php?/Tickets/Submit
For reference: