You should be able to print the stubs after posting.
Do you get an error when you try and print? Or does nothing happen at all? And are you using Custom Forms or Preprinted Forms (go to setup, settings, Reports and Forms to determine this.) If you are using custom forms and are using the 2008 version of Simply Accounting or lower, make sure your email form type is not set to User Defined Form. Change the Description to Direct Deposit stubs.
Please post back with some of the details requested above.