How to Fix Error 1720

1. Check whether you are in administrator mode using 'User Accounts' in Control Panel. If not, log out and log in again using an administrator account.
2. Check whether you have the latest version of InstallShield on your computer. If not, download the latest version and install using default settings (see Resources).
3. Download and install a registry cleaning software and try to solve the conflicts and problems in the registry (see Resources).
4. Make sure the disc is not damaged or corrupted if you are using a CD or DVD for installation. Clean the disc with a piece of cloth. If the disc is corrupted, get a new installation disc.
5. Uninstall the previous version of the software completely and restart you system, then try a fresh installation.
6. Find the path for the source files and give the path of these files during the installation using the 'Browse' button.