Unable to restore from Shadow Copy due to long filename

I had the exact same problem in Server 2008 R2 and this is how I solved it:

1. Right click on the folder you're trying to restore from shadow copy and chose Previous Versions. Chose a date and click on Open.

2. Right click on any file or folder within the previous folder and chose Properties. On the General tab copy what's shown in 'location', e.g.: \\localhost\D$\@GMT-2011.09.20-06.00.04\_Data

3. Open cmd.exe and type in:

    subst X: \\localhost\D$\@GMT-2011.09.20-06.00.04\_Data
   

4. Open PowerShell and use robocopy to copy content of X: e.g.:

    robocopy X: D:\Folder\ /E /COPYALL
   

5. Check that all files have been copied.

6. When finished type subst X: /D in the cmd (Command Prompt) window

Have you tried sharing the folder you are trying to restore from? That way you can try opening \server\share\filename instead of \server\share\path....\filename?

If that doesn't work I would suggest try accessing the volumes through the command line where you can use the \\?\ method for access, which has a 32,767 character limitation.