problem with backing up PE 13

[mikep33420010]

I have Elements 13,  Windows 10.  Backup stops before complete.  No notification as to why. (Last one was 79%).  I have 500 gb drive I am backing up to so space is not the problem.  Anyone know what I can try? 

Thanks, Mike

[Greg_S.]

Make sure you have no missing files in your catalog.  (Use the Find>All missing files menu.)  Delete or reconnect all missing files.  Also, perform a repair and optimization of your catalog.  (File>Manage Catalogs>Repair/Optimize buttons)