[cups.general] /usr/libexec/cups/backend/usb failed

[Grant]

>> files fine, but there is a 10-second delay between ZPL labels with a
>> Zebra LP2844-Z when there was no delay with the client and server on
>> cups-1.5.2.  The ZPL label is printed like this:
>>
>> system(qq{/bin/echo "^XA
>> ^MNN
>> ^LL235
>> ^FO290,60^A0N,125,70^FD$sku^FS
>> ^XZ" | /usr/bin/lpr -l -P Zebra_LP_2844-Z_4x1});
>>
>> There is nothing in the cups error_log.  Can I debug this?
>
>
> How is the Zebra printer configured? (raw, ZPL label printer driver from CUPS, ???)

It is configured with the ZPL label printer driver from CUPS.  Is that
the best choice when sending it ZPL like I am?

- Grant