new [] / delete [] errors, going crazy!

[weaverx9x9]

I am writing a program that allows for the creation of a theoretically infinitely large integer. I have created the class MyInt and implemented the storage using DMA.
I have attached the .cpp and .h files. These are not the complete files, there are several other overloads but for simplocity sake I narrowed it down to only those functions involved in the problem.
I have placed many cout statements in here trying to trace the problem. And the problem seems to be in the Grow() function that increases the size of the array. Any help would be greatly appreciated.

Thanks in advance.