@
copywrite - if you send me the details of what you're trying to do (here or in a PM) I'll give it a try - I don't use the PI so baby talk instructions, but the version I have is fresh off the press
Best way to verify you have a fresh json file is to look at it's create date in file properties - but if you renamed it and then ran the PI I.m confident you would have got a fresh one.
It appears like you might have a 'dead' PI, something about 'food'. It's looking for PyQt4, which means it's not calibre 2.n compliant, might be an idea to disable/uninstall it. Although I would be very surprised if that were causing problems with this PI.
BR