Crash of the Library on Windows NT.

I am trying to run the library on Windows NT 3.51. The library was
compiled using VC++ 4.0, and the examples are crashing on the followinf
if ((status = (*me->target->isa->put_block)(me->target, b, l)) != HT_OK)

in the function:


I have read previous messages on this list from people complaining about
the same problem, so if any body knows what is the solution, I will
appreciate it if you tell me.
Thank you