HI Sam,
General rule of thumb in using Intel FPGA dev kit board is to reduce the JTAG frequency first. By default JTAG frequency is set to 24MHz. Kindly reduce it to 16MHz or lower.
You can do it by launching Quartus Prime programmer -> hardware setup -> hardware frequency
The other thing to take note is BoardTestSystem software is specially designed to pair with certain Quartus version usage only. In your case, it's Quartus v18.0.1 as indicated in your installation folder naming. You can use Quartus v19.1 for your own design testing but try not to use it for BoardTestSystem software.
Thanks.
Regards,
dlim