IQ+ users on MS Windows should update the driver, the PE0FKO
libusb-w32 driver is obsolete and not compatible with the latest
libusb user mode library we are using for control of this device. By
far the easiest way to upgrade, without loosing compatibility with
applications using older vendor USB drivers, is to download the Zadig
tool from https://zadig.akeo.ie/, run the tool, scan for all
appropriate USB devices (check the "Menu->Options->List All Devices"
option), select the device called DG8SAQ from the top drop-down list,
then with WinUSB listed as the replacement driver to right of the
green arrow, double-click the "Replace libusb-w32" button. After a few
seconds the driver will be replace, quit the utility and you are done.
A separate install of the portaudio library is now required, see
"doc/building on MS Windows.txt" for a suitable recipe.
The map65 code base is still MS Windows specific in some areas so
don't expect successful builds on Linux or macOS yet.
Bill Somerville