As mentioned by another person, you can try the -clean option. However, if it still does not load and you need to cancel the installation, you should NOT just remove the plugin on disk. If Eclipse thinks there is a plugin and it will be uninstalled all of a sudden, you will encounter a lot of problems in the future.
The best approach is to use the director of Eclipse (the management application) to return your installation (this is installed using Eclipse). You will need to know which previous revision you would like to return to. You can view all previous versions of your Eclipse installation at / p 2 / org.eclipse.p2.engine / profileRegistry /, where the profile name probably looks like SDKProfile. Here you will see several profiles. Each one represents the previous state of your Eclipse installation. Find the version you want to return to (they should all have a timestamp), and from the root of Eclipse run the following command:
./eclipse -application org.eclipse.equinox.p2.director -revert 1348266115829 -repository http://download.eclipse.org/releases/juno
Obviously, replace the revision with the one you want to cancel too. That says please return my Eclipse installation to 1348266115829, and if you need any dependencies, see http://download.eclipse.org/releases/juno . If you do this for Indigo (Eclipse 3.7), change the url to http://download.eclipse.org/releases/indigo
irbull
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