From: Kevin Slane on
I have an MPP file given to me by one of my users. When she tries to add a
column to the Gantt Chart view, we get a little screen flicker, then several
new columns appear on the view. I don't know what to tell her. It doesn't
do this on any other view, and it only does this in this particular MPP. If
I open another project file, it doesn't behave this way.

Is it possible that this file has just been corrupted somehow?