Odd - Says Errors in Return When Try to Preview Printing

Been through all the reviews and error checking and fixed everything. Entered bank information, DL#s, all that. Now I'm wanting to print my return before I finally submit it, and when I try to Preview before printing, it tells me there are errors in my return! LOL  But, it also gives me the Continue button to print. So.... what about the errors? How can this be? Do I now have to go all the way back and run the error checking again and see what's going on? And if it says I'm good, what does that mean? Is this a bug? 

UPDATE: OK, it seems to ONLY say I have errors if I select the  All official forms for filing option. Not with the other options. I also get the same error if I select Save as PDF, but again, only for the All official forms for filing option. Still a bit concerning.