It failed to install the newest nightly-build(14_mar) on Vista.
1.Uninstall all Jdk and Jre on Vista.
2.Install jre-1_5_0_08-fcs-bin-b99-windows-i586-p-14_mar_2006.exe on Vista.
3.A error dialog poped up and installation failed.(see attachment)
I can reproduce it using bundle from "http://j2se.east/arc/1.5.0_08/nightly/2006-03-21/windows-i586/". I found some issue talking about "error 1722" at "http://www.java.com/en/download/help/error_1722.xml",and I changed the installing directory as the suggestion. But the installtion failed again and error number changed to 1721.The following is the description on 1721 on microsoft.com.
Error 1721. There is a problem with this Windows Installer package. A program required for this install to complete could not be run. Contact your support personal or package vendor
(http://support.microsoft.com/default.aspx?scid=kb;en-us;891985)