Problem: passing output to gr_vector_sink_c

Hi!

I have a problem passing outputs from my signal processing block to a
gr_vector_sink object that I have created.

I implemented my signal processing block using the standard C++ class
template called complex. I particularly used the complex type. I
was
just wondering whether this would be in conflict with the input
standards of
gr_vector_sink_c since I always get a segmentation fault when I connect
and
then run the two graphs.

I would really appreciate your replies.

Thanks!