This indicates the software is corrupted or its files have been affected by another installation or program. First thing to do is to disable the startup applications, then reboot the PC. Go to Start > Run > msconfig and switch to Startup. Uncheck all the applications from the list. Reboot the PC and then try starting the software again. If you still have issues, download another installation package, uninstall the current version of software and install the new one downloaded from the official website.
Verizon website: https://care.verizon.net/iha/IHAPC.aspx
