Excel crash while expanding object in watch window

[Vilva]

i have a vc++ dll which has been included with VB, and then i have created an
object for that component and i am using that object in my code , meanwhile i
was trying to watch the values of that object. For that i have added that
object into watch window , and then i clicked the + symbol (near to the
object in watch window) to expand the object , excel is crashed immediately.

excel is getting crashed while expanding and collapsing the object in watch
window,

can anyone help me get out from this issue ?

please give me your suggestions,.