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• A volume or folder which has been defined in the selected Destination Preset could not be found.
• Double check your Destination Preset(s).

Too much Load on Engine

Image Added

• The resolution and/or framerate of the Channel Preview may be too high.
• Verify the Preview Options of the particular Channel in the Preferences of just:in Engine.
• Use a dedicated machine for just:in Engine. Make sure the machine specs are sufficient.