Retirement tax questions

Yes, I entered wages from a W-2. 

I cannot preview the 1040 form until I pay, right? And TT wants me to upgrade from Free to Deluxe and pay $49 because of the claim on Excess Contribution. So it's a bit of a Catch-22, I think. TT won't show me why I made an excess contribution until I upgrade, but I don't want to upgrade until I understand why an upgrade is necessary.