Why can't I open my vi's anymore.

[Jaden]

When I try an open a particlur set of vi's I can't. Other vi's I have open fine, but there are a few that can't and here is the error message that I get.
Windows cannot find 'c:\ALO v1.1\ALO lidar\ALO LIDAR.vi'. Make sure you typed the name correctly, and then try again. To search for a file, click the start button, and then click search.
Now I only get this message when I double click on the vi to open it, but when I try opening the vi from an open labview window labview will crash.

[Tyto alba]

Have any of the paths to your vi's changed? I would try doing a search within windows for the file "ALO LIDAR.vi" and see if it is still in the same location.