Bug: If you create an XY table with dates and row titles, you can't use the row titles to label the X axis of the graph.

This bug is in Prism 7.0a (mac) and 7.00 and 7.01 (win). 

This combination doesn't work:
 -XY table with dates.
 -Graph set (top right of Format Axis) to: Linear scale.
 -Graph numbering (lower on Format axis) set to Row Title.

When you choose that combination, Prism seems to lose track of the axis scale so no data are shown on the graph. 

The workaround is to create XY tables with X as numbers, not dates, if you want to use row title labeling.