Updating to eclipse 3 4
Note, all milestone builds and release candidates, except the last one, are removed approximately one week before a formal release date, to free up space on and mirror servers.
To be explicit, only about two milestones are left in the composite milestone repository, even though the simple repositories are retained until the release is available.
There are some special composite repository URLs that are primarily intended for committers and earlier testers.
They are each a composite that simply points to the current version of the repositories listed above.
When that happens, you should uninstall it and reinstall again with the update site...
if that still fails, you could try to get the zip files, as it will at least give you a warning when it is corrupt.
Now, read the license agreement and if you accept, select the accept radio button and click Finish.
Reason for the failure: The editor class could not be instantiated.This usually indicates that the editor's class name was mistyped in installation details then on the Installed Software tab, select the plugins you want to uninstall and click Uninstall.If you installed with the zip file, just remove the com.python.pydev and org.python.pydev features and plugins from the dropins folder.Py Dev is open source and depends on your contributions!