diff -ru vigra-1.8.0/include/vigra/numpy_array.hxx vigra-1.8.0.new/include/vigra/numpy_array.hxx

--- vigra-1.8.0/include/vigra/numpy_array.hxx	2011-09-20 19:38:36.000000000 +0100

+++ vigra-1.8.0.new/include/vigra/numpy_array.hxx	2012-02-27 21:03:54.000000000 +0000

@@ -1074,7 +1074,7 @@

         this->m_stride /= sizeof(value_type);

         this->m_ptr = reinterpret_cast<pointer>(pyArray()->data);

-        vigra_precondition(checkInnerStride(Stride()),

+        vigra_precondition(this->checkInnerStride(Stride()),

             "NumpyArray<..., UnstridedArrayTag>::setupArrayView(): First dimension of given array is not unstrided (should never happen).");

     }