BSOD when target pathname exceeds 260 characters on NTFS-HDD

When SyncBackFree tries to copy a file to a NTFS-formatted external harddisk with a target pathname that exceeds 260 characters a BSOD occurs.
The event log contains a Bugcheck error 1001: 0x00000024 (0x000000b500190637, 0xffffd00026215088, 0xffffd00026214890, 0xfffff8014ee2c9ed).

Windows Explorer results in message "Targetpath too long" when trying to execute the same copy.

OS: Windows 8.1 (64 bits)
Version SyncBackFree: V6.5.48.0