File Path Issues

[Skyler16B8]

Recently, something happened to my Lightroom database and while the thumbnail images are visible, the file path to the original has been broken  . . . on something like 50k images. 

"everest_9229145105_o.jpg” could not be used because the original file could not be found. Would you like to locate it?

I can go in and find and fix this one by one, but it is obviously too many. 

Is there a way to do this in bulk? How did these get corrupted in the first place? 

[Ian Lyons · Accepted solution]

Have a look at Part 1 and 2 of this tutorial http://www.computer-darkroom.com/lr2_find_folder/find-folder.htm