"Operation can't be completed because item with name already exists" error with Paragon NTFS
Im running Sierra and have the same issue.  Did some research.  It has something to do with Paragon NTFS.  re-booting etc worked for me and of course I disabled paragon.  Another quicker method worked for me is by re-launching finder have I quit Paragon.  

If you have found a better solution pls let me know.  Thanks