so here is what I discovered.  I had 2 clients that didn't have enough to itemize, but had enough contributions to get the 600/300 add on.  So I had entered their contributions directly on Line 11 of schedule A.they were accepted, etc. When i open them up to print my return copies a few moments ago, I get an error on the blank line on the 1040/1040SR page where the contributions amount carries to.  It's . showing blank there, not the amount I entered directly on Line 11 of Sch A. Trace it backwards, and there is no amount on the 60% test page.  BUT, if I entered the same contributions amount on the CASH CONTRIBUTIONS SMART WORKSHEET (instead of directly on Line 11), it then carries to the 60% test page, and to the 1040/1040SR page section.