Unable to play video directly from MBL

Does no one know why I am having trouble reading files from the MBL drive?

Windows Media Player is able to do it, however VLC isn’t.

I’m on top of that getting this error in my media server (UMS):

Can’t read files from directory: X:

So that also is having trouble reading the files from the MBL.
And I have tried to setup a network drive on another computer on the LAN, and no problem viewing those movies with both VLC or UMS. 

So I do have a problem with the MBL, but can’t figure out what. Somebody have a good idea?