Yes, me too. Happened today Sept 17, 2023. I updated X-Plane 12 to the newest version (beta option checked) and then bought and downloaded the new Classic Plus. Had no issues with the Xplane update or the install of the 737. Loaded up a flight, activated the product with no errors, and found there was no sound. Also it seemed that operating switches had almost no effect. I say almost because I turned battery power on, and then selected from the IXEG menu to connect ground power. The GND PWR AVAIL light never turned on. So I just started the APU. I saw the EGT come up to temp, but no APU PWR AVAIL light, and flipping the switches didn't do anything. So there was battery power there to start the APU, and clicking the APU start switch made the EGT gauge move, but otherwise there was no power supplied to the aircraft. And with the sound issue, I went to XPlane's sound menu, and turned up the interior and exterior sounds to max, clicked done, and there was still no sound. I went right back into the settings menu, and found that the interior and exterior sound sliders were reset to 0. I have Avitab and Toliss installed as well, and I have navigraph/simbrief linked to Xplane, but to my knowledge, no other plugins. I say to my knowledge because I'm not the most computer literate person in some cases, so it might be that some plugin was installed in the background I don't know about.
