I found this. Hope it works and helps
Error 1722. There is a problem with this Windows Installer package.
This article applies to:
* Platform(s): Windows 7, Vista, Windows XP, Windows 2000, Windows 2003
* Browser(s): Internet Explorer, Firefox
* Java version(s): 6.0, 6u10+
SYMPTOMS
Installation of Java has not completed and an error appears:
Error 1722. There is a problem with this Windows Installer package. A program run as part of the setup did not finish as expected. Contact your support personnel or package vendor.
CAUSE
Error 1722 is an InstallShield error code. It indicates that the installation process has failed. The exact reason for this error is not known at this time.
SOLUTION
Please follow the steps below for resolving this issue.
1. Remove any traces of the failed Java installation by uninstalling Java
2. Download and install the offline installer package.