n the Assembly Information, you can set the assembly version and the file version. What is the difference between the two? The documentation is not exactly helpful in this area. I had the assembly version set to a unique number, and just left the file version as 0.0.0.0. My program crashed on another computer, and the windows error report stated: "AppVer: 0.0.0.0", so I am thinking maybe the file version is more important (unless this was an older version of my program that had BOTH assembly and file version set to 0.0.0.0). When you right-click properties of a file, it shows the File version at the top, and both assembly and file versions inthe list box at the bottom, with assembly listed first. It is totally unclear to me what either is for, which is more important. For now, I'll just set them to both be the same.