Installing PDT on Eclipset Classic 3.7 (indigo) always fail

Every time i try开发者_JAVA技巧 to install PDT through "install new software" feature in Eclipse Classic 3.7 (tutorial here) i get the following error, after a lot of time fetching and downloading stuff:

An internal error occurred during: "Install download1". Comparison method violates its general contract!

This is frustrating cause i'm following the tutorial exactly. What's wrong with it? How can i check for logs and try to find out the actual error?

This happens on both x86 and x64 version of Eclipse. Tried in a fresh environment, Windows 7 x64, JRE 7 x64 and Eclipse Classic 3.7.

I got this error when I was running Eclipse 3.7 on Sun JRE 7 on Debian 6. It is related to synchronizing the updates mirror list. Running JRE 6 fixed the issue for me.

Synchronization problem in mirror selection

Can't update Eclipse for EE Developers (Indigo)

Solved using 3.7.1 from here. Getting no problem at all both on x86 and x64 version. Thanks for helping!

Last I had heard, a few months ago, the PDT plugin was no longer being maintained. I keep a separate version of eclipse just for PHP development.

http://www.eclipse.org/downloads/packages/eclipse-php-developers/heliossr2