I don't know when this started...we don't produce many pdf reports....all the html ones are still working.   I can tell you that it was working at one point and now all are broken with this same error:

QWebException: "'NoneType' object has no attribute 'id'" while evaluating

'not user_id.id'

Full error:  http://pastebin.com/VpUv2cDX

I'm guessing this was something I did but if anyone has any insight would be appreciated.