Bug 102150 RCP splashscreen stays forever in case of error
If a serious error occurs during the startup of an RCP application, like a missing plugin etc. so that the application could not start, the splash screen of the application stays for ever. This happens if the application is started by PDE using the "Run as eclipse application" menu, but the process has been stopped using the "Stop" button. I had to kill the new eclipse.exe process using the windows taskmanager.
bundles/org.eclipse.core.commands/src/org/eclipse/core/commands/ParameterizedCommand.java
return Util.compare(thisDefined, otherDefined);
		}
		try {
			final int compareTo = getName().compareTo(command.getName());
			if (compareTo == 0) {
				return getId().compareTo(command.getId());
			}
			return compareTo;
		} catch (final NotDefinedException e) {
			throw new Error(
					"Concurrent modification of a command's defined state"); 
		}
	}
	/* (non-Javadoc)
	 * @see java.lang.Object#equals(java.lang.Object)
	 */
	public final boolean equals(final Object object) {
		if (this == object) {
			return true;
		}
		if (!(object instanceof ParameterizedCommand)) {
			return false;
		}
		final ParameterizedCommand command = (ParameterizedCommand) object;
		if (!Util.equals(this.command, command.command)) {
			return false;
		}
		return Util.equals(this.parameterizations, command.parameterizations);
	}
	/**