Failed to call ThenRnnForward with model config

[nicorellius]

Getting error when running input CSVs of more than about 50 lines:

tensorflow.python.framework.errors_impl.InternalError: Failed to call ThenRnnForward with model config: [rnn_mode, rnn_input_mode, rnn_direction_mode]: 3, 0, 0 , [num_layers, input_size, num_units, dir_count, seq_length, batch_size]: [1, 32, 256, 1, 30, 1024] 
	 [[Node: encoder1/CudnnRNN = CudnnRNN[T=DT_FLOAT, direction="unidirectional", dropout=0, input_mode="linear_input", is_training=true, rnn_mode="gru", seed=87654321, seed2=0, _device="/job:localhost/replica:0/task:0/device:GPU:0"](encoder1/transpose, encoder1/ExpandDims_1, encoder1/Const, encoder1/concat)]]
	 [[Node: out/Reshape/_151 = _Recv[client_terminated=false, recv_device="/job:localhost/replica:0/task:0/device:CPU:0", send_device="/job:localhost/replica:0/task:0/device:GPU:0", send_device_incarnation=1, tensor_name="edge_605_out/Reshape", tensor_type=DT_FLOAT, _device="/job:localhost/replica:0/task:0/device:CPU:0"]()]]

This is on an Ubuntu server we built that was running fine for months. We've tried files that previously worked with no success.