Commented Unassigned: COM object cannot be registered [10553]

I have a large solution contains many COM objects.

So, I have added vld.h to one of the COM projects to try to detect memory leaks.
After this VS2010 cannot register this COM after it is built.
I have removed include vld.h then VS successfully registered.
How I can solve this problem?
Thank you.

Comments: I want to include vld source directly into ComTest project to debug vld source directly. Can anyone modify the ComTest project including the whole vld source files? I tried myself, but got compile errors. So, I am asking help here.