Error Causes and Corrective Actions If an error is detected during operation of the Printer Update Utility, an error message is displayed. If an error message is displayed, perform the operation described in the message instructions. The following table lists the causes and corrective actions of the main error messages that may be displayed. ... An error occurred during the printer function update. ... PIXMA Pro Series Printers Support
If paper does not feed properly into the printer, or if an error occurs prompting you to load paper, check the following: Make sure that paper is loaded. Loading Paper
This error may also appear as the similarly worded "App Name" can't be opened because it was not downloaded from the Mac App Store." depending on the security settings on your computer. A sample of the error is shown below:
