Bug 224997 [Workbench] Impossible to copy project
Version: 3.4.0 Build id: I20080330-1350 Steps: * empty workspace * create simple project "foo" * copy (context menu/key binding doesn't matter) * paste it (package explorer/navigator doesn't matter) * see: "Copy of foo", OK is enabled. Changing the name of the project (in whatever fasion) leads to the "Project name must be specified message". No way to sucessfully copy the project.
bundles/org.eclipse.ui.ide/extensions/org/eclipse/ui/dialogs/ProjectLocationSelectionDialog.java
* @param errorMsg
	 *            the error message to show if it is not <code>null</code>
	 */
	private void applyValidationResult(String errorMsg) {
		int code;
		boolean allowFinish = false;
		if (errorMsg == null) {
			code = IStatus.OK;
			errorMsg = ""; 
			allowFinish = true;
		} else if (firstLocationCheck) {
			code = IStatus.OK;
		} else {
			code = IStatus.ERROR;
		}
		updateStatus(new Status(code, IDEWorkbenchPlugin.IDE_WORKBENCH, code,
				errorMsg, null));
		getOkButton().setEnabled(allowFinish);
	}
	/**
	 * Check whether the entries are valid. If so return null. Otherwise return
	 * a string that indicates the problem.
	 */
	private String checkValid() {
		String valid = checkValidName();
		if (valid != null) {
			return valid;
		}
		return locationArea.checkValidLocation();
	}