Hey, sorry I missed this since the object is private I did not expect to have any comments here haha. Im not sure what causes that issue but I just tried loading it on both prusa slicer (mine is version 2.3.4) and also Cura (4.13) and I was able to slice it just fine without errors. If the issue is still not fixed on your end, do you mind sending a screenshot of the issue to my? Cheers, Dan

Finally done. This project is really massive! But i love it, and enjoyed building it. Thanks again Dan for your design.