Tribler_6.5.2 wont boot in my Win 7

Traceback (most recent call last):
File “tribler_exe.py”, line 127, in
File “Tribler\Main\tribler.pyo”, line 82, in main

File “Tribler\Main\tribler.pyo”, line 64, in run

File “Tribler\Main\tribler_main.pyo”, line 80, in

File “Tribler\Main\vwxGUI\MainFrame.pyo”, line 52, in

File “Tribler\Main\vwxGUI\home.pyo”, line 7, in

File “Tribler\community\tunnel\hidden_community.pyo”, line 26, in

File “Tribler\community\tunnel\routing.pyo”, line 5, in

File “Tribler\dispersy\crypto.pyo”, line 13, in

File “libnacl_init_.pyo”, line 76, in

File “libnacl_init_.pyo”, line 33, in _get_nacl

OSError: Could not locate nacl lib, searched for libsodium

I have the libsodium.dll.

What can I do?