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).");
 
     }