I'd say it's a bit of a stretch to expect the developer would have checked WC V1 for compatibility with Mojave! I know I didn't. What OS was Apple shipping back then, Mountain Lion? You've[/size] now got a nice machine with plenty of processing capability and adequate RAM so upgrade to WC 3, install the latest Silicon Labs drivers, and you'll be good to go. I don't think the developer has formally told the masses yet that his currently-shipping version of WC is compatible with Mojave but there are several of us here on the forum who have it running with no problems. In fact, as my profile should indicate if I remembered to update it, the soon-to-ship WC point increase runs fine on the latest Mojave developer beta as well.