C Run-Time Error R6025
No object has been instantiated to handle the pure virtual function call.
If you are seeing this from an application, contact technical support for your application.
This error is caused by calling a virtual function in an abstract base class through a pointer which is created by a cast to the type of the derived class, but is actually a pointer to the base class. This can occur when casting from a void* to a pointer to a class when the void* was created during the construction of the base class.
For more information, see the Microsoft support website.