Here is what I did. I am not sure that all these steps are necessary, but I just wanted to be sure.
Control panel ->
File history ->
Advanced Settings ->
Open file history event logs and fix/delete all the files that are messing up file history. For me there were a bunch in this folder:
And I deleted them. They didn't look important.
2 . I wrote a quick python script to find any files with non-ascii characters in their names. I manually renamed all of these. This may be why file history fails on some music folders!
for currdir,folders,filenames in os.walk(r'C:\Users\<username>'):
//Max filename len on ntfs is 255, but file history adds "F:\FileHistory\<username>\<computer name>\Data" to the front the files and a timestamp to the end so the file really needs to be less than 200 to be safe
if filter(lambda x: x in validChars, currdir[2:].replace('\\',''))!=currdir[2:].replace('\\',''):
for filename in filenames:
if filter(lambda x: x in validChars, filename)!=filename:
EDIT: Don't delete Autodesk Inventor files, it will break autodesk. o_o
File history -> select drive -> (choose your drive) -> (choose your latest backup) -> file history gives some warning about your latest backups not being on this drive. I Clicked OK.