error message format

tfields/core.py

@@ -511,7 +511,7 @@ class Tensors(AbstractNdarray):
         for d in obj.shape[1:]:
             if not d == obj.dim:
                 raise ValueError("Dimensions are inconstistent. "
-                                 "Manifold dimension is {obj.dim}, "
+                                 "Manifold dimension is {obj.dim}. "
                                  "Found dimensions {found} in {obj}."
                                  .format(found=obj.shape[1:], **locals()))
         if dim is not None: