I have Windows 7 and installed what turned out to be an incompatible program. It caused a "low memory" warning and all of my open windows began to crash. Outlook was one of them. When I rebooted, I noticed my preview pane was working, however the summary of headers no longer featured the "from" and "subject" fields on top of the other. Basically, these fields look the way they should if the reading pane is turned off. I have tested my pst file on another computer and do not have this problem, which leads me to believe that it is in the program itself. I have done my best to attempt a clean re-installation of Outlook, which also has not worked. Any suggestions?