Java DK is not getting installed

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hermy
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Hello!

I installed java developers' kit today, but in c:\program files by mistake. I wanted to change it to c:\, so initially I just cut-pasted it. It didn't work, so I uninstalled it (add or remove programs in control panel). However, when I tried to delete the "java" folder in c:\, it said that some file was write-protected and couldn't be deleted.

I tried to install java DK again, this time mentioning the correct destination, but it wouldn't install. I get an error no. 1721 saying that "there is a problem with this package of windows installer. A program required for this install to complete could not be run" . I am surprised because, earlier, when I had installed java (albeit, at the wrong destination) there was no such error.

I also tried System Restore, but the folder "java" is still stuck there, and I keep getting error 1721.

Any help would be appreciated. Thanks in advance.
 
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Try reinstalling over the old installation (in the same folder exactly). If that works, then formally uninstall that (via Control Panel). Then reboot, and try again.
 
Also, see http://support.microsoft.com/kb/891985 if you are on Win XP