I have an MX922 with firmware 3.010 using several Mac computers running OS X (10.11.5) with MX920 Series CUPS driver 11.7.1.0 installed. All connected through a wifI network reporting excellent signal-to-noise ratios (full wifi fan). When a print job is sent to the printer, it alternately returns a support code 300, support code 306, or sometimes I just get a "Printing - A communication error has occured" in the job line with no additional error reporting. I have place the printer, computer and wifi router in the same room with no improvement in behavior. This now happens near-constantly and I am unable to print reliably. Please help.
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