[Error 17] Toolkit Error: Internal Error: Could not build graph. Missing link: concat

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[Error 17] Toolkit Error: Internal Error: Could not build graph. Missing link: concat

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I'm trying to translate yolov2(darknet) into movidius graph just like what TinyYolov2 in the NCAPPZOO does.(you can see it in the makeflie )

The first step to translate yolo-ibm_40000.weights and yolo-ibm-test.cfg into yolo-ibm-test.pb using "flow" is done.

But when I run mvNCProfile yolo-ibm-test.pb, it returns an error : [Error 17] Toolkit Error: Internal Error: Could not build graph. Missing link: concat

(My mvNC version is v02.00, Copyright @ Movidius Ltd 2016)

I'm a little confused about the error, doesn't ncapi support concat? Could anyone help?

(it seems I can't upload .weights or .cfg, so if you need, for the cfg you can refer to https://github.com/imistyrain/facemask/blob/master/yolo-ibm-test.cfg)

Thanks

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