Bug 97523 [Import/Export] Get overwrite prompt before no resources selected prompt
3.1 RC1 - File > Export > Archive - clear any selected resources - enter an archive file name where the file already exists - Finish - it prompts to overwrite the file; choose Yes - it says "There are no resources currently selected for export" (OK) Should get the "no resources" prompt first, and not bother with the second one. Should check the other export wizards too.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/wizards/datatransfer/WizardFileSystemResourceImportPage1.java
}
    /**
     *	Answer a boolean indicating whether the specified source currently exists
     *	and is valid
     */
    protected boolean ensureSourceIsValid() {
        if (new File(getSourceDirectoryName()).isDirectory())
            return true;
        displayErrorDialog(DataTransferMessages.FileImport_invalidSource);
        sourceNameField.setFocus();
        return false;
    }
    /**
     *	Execute the passed import operation.  Answer a boolean indicating success.
     */
    protected boolean executeImportOperation(ImportOperation op) {
        initializeOperation(op);
        try {
            getContainer().run(true, true, op);
        } catch (InterruptedException e) {
            return false;
        } catch (InvocationTargetException e) {
            displayErrorDialog(e.getTargetException());
            return false;
        }
        IStatus status = op.getStatus();
        if (!status.isOK()) {
            ErrorDialog
                    .openError(getContainer().getShell(), DataTransferMessages.FileImport_importProblems,
                            null,