Fix to the fix :) ScalarVariable and random state type don't have a dtype field.

theano/sandbox/cuda/opt.py

@@ -246,9 +246,9 @@ def local_gpu_dot_to_dot22(node):
 
     # In case the got do input upcast, we much check that we can
     # make it run on the gpu.
-    if node.outputs[0].dtype != 'float32':
-        return False
     if node.op == gpu_from_host:
+        if node.outputs[0].type.dtype != 'float32':
+            return False
         host_input = node.inputs[0]
         if host_input.owner and host_input.owner.op == tensor.basic.dot:
             x, y = host_input.owner.inputs
@@ -269,6 +269,8 @@ def local_gpu_dot_to_dot22(node):
 
             return [GpuReshape(1)(gpu_dot22(gpu_x, gpu_y), shape_out)]
     if node.op == tensor.basic.dot:
+        if node.outputs[0].type.dtype != 'float32':
+            return False
         if numpy.any([(i.owner and i.owner.op == host_from_gpu) for i in node.inputs]):
             x, y = node.inputs
             if _is_real_vector(x) and _is_real_matrix(y):