I logged a ticket directly with ZWO regarding this issue. i think it's either a problem with the SDK or the Driver itself. I've noticed a strange note in my Device Manager talking about one part of the driver has not been installed completely. Yet windows says the driver is installed an operating correctly. It does see it as the 2600MC Pro. And it connects to the camera using both NINA and ASICAP. I actually use the deep sky imaging portion but it connects to the camera. And it starts the exposure. But right as it finishes the exposure it throws the error. I thought maybe it might be a permissions issue, but I gave the entire file Read and write capabilities and it still does not work. I've sent screen shots of the error msgs. A lot of Code. I'll try and attach a file for others to look at.