In a previous thread, it has been noted that if a user on a Raspberry Pi is not a member of the video group, the user will not be able to use Mathematica and instead will be stuck in an inescapable Product Activation dialog. It's a weird error that results from the way Wolfram ensures that their (in this case, free) software is running on the RPi (or so I've heard).

I have run in to the same problem, although this time, it is not due to the groups issue mentioned earlier. I am confident that it is the product activation issue, since I am able to get around it via sudo wolfram. The problem came up in a very foolish way. I have multiple RPi's on my desk, and typically access them through SSH terminals on my main PC. I just purchased the 3.5" PiTFT from Adafruit and put that on one of the RPi's. When following their installation routine, which requires a modified kernel, I accidentally entered all the commands on my non PiTFT RPi. It was then that I noticed that Mathematica no longer worked on the RPi.

I've tried adding new users, running dpkg reconfigure wolfram-engine and am now ready to revert back to an older backup. I'd like to exhaust my troubleshooting options, however, before I go that route.

To make a long story short are there other checks similar to the video user-group that can be shared so that I (hopefully no one is stupid enough to repeat this error to make it a 'we') can get my (non sudo'ed) wolfram back?