Mat::resize() hangs in 64bit

edit

EDIT: This was caused by code outside of OpenCV. Still haven't tracked down exactly what's going on, but it is not the fault of OpenCV.

Mat frame;
if (Cap.read(frame))
{
   Size_<int> s(1024, 1024);
   Mat test;
   resize(frame, test, s);
}

Running x86 this works perfectly in 2.4.3. Running x64 execution hits resize() but never returns. Any ideas what I've done wrong? Or a different way to resize Mats?

Thanks!