Carla-Control cannot connect on Windows

[ThatOtherAndrew]

I can't seem to be able to connect to a running Carla instance from Carla-Control, despite triple-checking that OSC is enabled, the programs are allowed through the firewall, the host and TCP/UDP ports are configured correctly, etc.

When using python-osc to manually send some OSC messages I can see that they successfully make it through to Carla from the console logs:

>>> client = udp_client.SimpleUDPClient('127.0.0.1', 22755)
>>> client.send_message('/Carla/1/set_parameter_value', 1)
>>> client.send_message('/Carla/1/set_parameter_value', 1)
>>>

~\Downloads
❯ .\Carla-2.5.8-win64\Carla\Carla.exe

~\Downloads
❯ Carla 2.5.8 started, status:
  Python version: 3.8.7
  Qt version:     5.12.12
  PyQt version:   5.13.1
  Binary dir:     C:\Users\Andrew\Downloads\Carla-2.5.8-win64\Carla
  Resources dir:  C:\Users\Andrew\Downloads\Carla-2.5.8-win64\Carla\resources
Frontend pixel ratio is 2.0
Failed to load JACK DLL, reason:
libjack64.dll: error code 126: The specified module could not be found.

[carla] CarlaEngineOsc::handleMessage() - failed to get plugin, wrong id '1'
[carla] CarlaEngineOsc::handleMessage() - failed to get plugin, wrong id '1'

However, Carla-Control just isn't working for me:

[jpka-]

Hello. failed to get plugin, wrong id '1' can be due to no one plugin was loaded yet.

1. Are Carla and Carla-control of same version?
2. Are admin rights set?
3. While Carla running, what are results of nmap localhost -p 22750-22760 and nmap localhost -sU -p 22750-22760 (i am sorry, these are Linux examples, Windows may differ, idea is to check both tcp and udp ports are opened, admin rights needed).
4. Is telnet localhost PORT can connect? (For Windows it maybe PuTTY?).