Having an issue where after I close the program, I get the "this program closed unexpectedly" warning. Is there an easy way to debug this?

[daniel]

That crash is a classic:
Class members are constructed in the order of appearance in the class declaration and destroyed in the opposite order (what @Xenakios hinted in his post).

If you make sure to declare the Slider BEFORE the SliderAttachment you are safe from that crash, no code necessary. But I also like this suggestion from @yfede:

Closing the Plug-In makes the DAW crash

Rather than adding a SliderAttachment member to each Slider, why don’t you keep around this kind of struct for whenever you need such a coupling: struct SliderWithAttachment { ScopedPointer <Slider> slider; ScopedPointer <SliderAttachment> attachment; }; This way, in your Editor you can simply add a member like: SliderWithAttachment knob; and voila, you have the knob.slider and the knob.attachment automatically deleted in the correct order, and also nicely bound together making the c…