I just looked at the source code, it would appear that Rokon just throws a random exception so it’s kinda tricky to trace where the issue is really coming from.
I think your best bet would to be switching over to using the Java source code for the app and debugging it from there.
The most likely culprit is in
TextureManager.java
Try to figure out what is the state of that texture you are trying to load/reload and it may help you.
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solved What does this error message mean, it’s caused by the rokonandroid game engine