PhysX error in Packaged Shipping Build?

Just tried running my game as a packaged Shipping build, and get this error when loading into the map. Not too sure where it’s come from, since all it does is spawn a hover-tank for the player on game start:

Any clues as to what could be causing this? A Development Build gives no crashes at all…

Hey TheJamsh,

Thank you for taking the time to report this issue, and we appreciate your patience while awaiting a response. In order to assist you in an effective manner and to increase our support within this section of the AnswerHub, we would like to see if you are still experiencing the issue you are reporting in engine versions 4.8.3 and/or 4.9.1?

If so, would you mind providing some simple steps, screenshots, or any other relevant pieces of information to help us reproduce the issue on our end?

If you are experiencing a crash or a major bug, we ask that you take a look at our ‘How to Report a Bug’ sticky post on our Forums. It will give you all the correct instructions on how to make an official bug report on the AnswerHub, including the information needed in order to move forward with the reporting/troubleshooting process.

Please do not hesitate to ask questions or post any new comments in regards to the issue.

Thank you,