Horizaontal scrolling in right lister

I'm not sure how to explain this. My left lister shows folders and files in a vertical fashion with a vertical scroll bar to the right. This is how I want the left lister to behave. But it does something different. It displays the folder and files list in a horizontal fashion and there is a scroll bar at the bottom of the window. How do I get these folders and files to display vertically?

It sounds like the left and right file displays are in different view modes.

e.g. The left display might be in Details mode while the right is in List mode.

Thanks, leo!
I switched the right pane to details mode and now it scrolls vertically. Thanks - this was driving me nuts!