Could you both post the values that shows from :
This was an error from a quite older version during some merging of the native backends.
Should show something about openfl 2.0.0 and lime 1.0.0 at least, as these are where the source of that error comes from>
Secondly - that error may not even be the cause of the problem, as those errors can go by without causing trouble if not used.
Are you running with the debug flag enabled?