That's because what you are trying to do is so very, very wrong.

Did you prepare the S-Corp return?

Were there distributions?  If not, see Bob's answer on a different thread.   Maybe a W-2 isn't needed. 

At this stage, file an extension and sort this out aka fix it later as necessary.  Payroll returns may need to be done with the resulting penalties & interest. 

There are numerous threads, and of course google, on the 'what to do' in this case.