ProPresenter Users - do NOT upgrade to Mac OS 10.13.4 -- yet

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Attention macOS Users that use USB Display adaptors!

Do NOT upgrade to MacOS 10.13.4 at this time if you use a USB Display Adaptor (usually used for Stage Display outputs in ProPresenter). DisplayLink, the company that makes the chips that are used in the vast majority of the USB display adaptors that are made, released the following on March 30, 2018:

"We have become aware that installing macOS release Version 10.13.4 will cause DisplayLink connected displays to go blank after the OS upgrade, with the current DisplayLink driver [4.1] installed. Functionality such as Ethernet and audio, where implemented, is unaffected. We have alerted Apple to this issue and are working hard to find a resolution. These features continue to work as expected in 10.13.3"

Note that this is NOT a ProPresenter issue, but rather an issue with the driver that works with the USB adaptors.