mousewheel message crashing

Hey everyone, does anyone have a quick idea why my min external would crash, once I add the mousewheel message to my class?

   c74::min::message<> mousewheel { this, "mousewheel",
        MIN_FUNCTION {
            return {};
        }
    };

These are the last callstack entries on the crash, so as you can see it crashes in c74::min::wrapper_method_generic (), which is right before the callback on my message object should get called:

Thread 0 Crashed:: CrBrowserMain  Dispatch queue: com.apple.main-thread

0   com.cycling74.myexternal      0x0000000131966ff0 void c74::min::wrapper_method_generic<myexternal>(c74::max::object*, c74::max::symbol const*, long, c74::max::atom const*) + 288 (c74_min_object_wrapper.h:365)

1   com.cycling74.Max           0x000000010ba04371 BoxComponent::sendMouseWheelMessage(juce::MouseEvent const&, double, double) + 401

2   com.cycling74.Max           0x000000010c046cda juce::Component::internalMouseWheel(juce::MouseInputSource, juce::Point<float>, juce::Time, juce::MouseWheelDetails const&) + 346

All other mouse messages work just fine, only mousewheel instantly crashes the external once it's called.

Is there a trick to using the mousewheel message that's not obvious?

//Edit: I tried just adding the mousewheel message to the min.meter~ example project. Same result, it just immediately crashes the min.meter~ external, once it's called.