The annoying thing is that "Manage Configuration" seems happy and shows no error:
The error is caused by some installed features that require a specific version of a plugin.
<?xml version="1.0" encoding="UTF-8"?>
<feature id="broken.feature" label="Broken Feature" version="1.0.0">
<import feature="org.eclipse.platform" version="3.1.2" match="perfect"/>
What puzzles me the most is not the bug itself, but the fact I seem to be the only one getting the bug (I get it with 3.2 and 3.3M1).....
If you want to try it, just unzip this feature in your eclipse/feature directory and restart eclipse and try to install a feature using the update manager.
Fix the feature.xml file by removing the required version string.
Or use another working eclipse installation and install the plugins into a new extension location and add the extension location to your eclipse using "Manage Configuration".