Error 203 may occur when the projector connection with MoonRay is broken.
First, check that all cables are secure.
If the USB and HDMI cables are properly connected but you are still receiving Error 203, try the following steps:
Turn off MoonRay and close RayWare.
Unplug MoonRay's USB and HDMI cables from your computer.
Turn on MoonRay and open RayWare.
Plug MoonRay's HDMI and USB cables back in to your computer.
Try printing your model again.
If you've tried these steps and are still receiving an Error 203 message when attempting to print, please submit a ticket so our support team can help you resolve this issue.