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The main problem is that the RTSM you've selected is not included in DS-5. DS-5 has only the Cortex-A8 and Cortex-A9x4 models (and the A9x4 model is only enabled in DS-5 Pro edition). The other RTSMs are available in the separate Fast Models product.But something else has gone wrong (I'm not quite sure what) at the point where the error message is being created so you're not getting the "Failed to start model" message that I would expect to see.