SigmaStudio crashes on TCP communication with ADAU1451

I am running SigmaStudio 4.6 Build 0. Rev 1812 on Windows 10 Home 19043.1466 64-bit.

Having just done a fresh install of SigmaStudio, I created a new project. I added my ADAU1451 and TCP communication to the configuration:

I then changed the IP address for TCP to the correct one for my ADAU1451 (it is part of a RPi HAT from HiFiBerry, DAC+DSP). I successfully read the register values:

But, as I continue to work, I soon get an error message:

Sometimes SigmaStudio crashes at this point. Sometimes I can do more reads from the register. Sometimes SigmaStudio crashes without displaying the TCP error message.

In any case, I am unable to get further since the software crashes within minutes of starting the project.

Any pointers as to what I can do to resolve this? I know that there is no problem for other software to communicate with the RPi – I have a Putty SSH session open and can also view the RPi via VNC etc., all these sessions stay up without issues. Since I am able to pull register data from the ADAU1451, I doubt there can be any firewall involved.

This is the start of my journey with SigmaStudio and the ADAU1451 and I'd really like to get going! Any help most appreciated.