Solo 401k error - worksheet

I am trying to file my taxes but TT won't allow me to do so.  It says I have an error on the Keogh/SEP/Simple worksheet.  I contributed the maximum amount to my solo 401k of $22,500.  I also contributed the over 50 amount of $7,500.  And my business contributed another $33,000.  The worksheet shows the amounts on lines 6a, 6c and 6e.  However, TT shows I have an error on line 6a and that it shouldn't be over $22,500.  It's not - it is exactly $22,500.  I have re-entered it several times but the error persists.  

And it won't allow me to e-file unless I clear the error, despite the fact that it appears correct.  I am open to suggestions.  I suspect there is another place where something is not correct, but I cannot seem to find it.  I've been through the questions several times.  And been through the business income section several times.  I am at a loss of how to correct the error (which doesn't appear to be an error to me).

Thanks