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Failure to Connect to Target

Possible Problem — When trying to run a model, the Simulation Errors dialog box displays:

Error occurred while executing External Mode MEX-file 
     'sldrtext': Incorrect version

Solution — This message indicates that the Simulink® Desktop Real-Time™ kernel is out of date. Type rtwho at the MATLAB® prompt. If you see a message like this message, install the current version:

Incorrect kernel version is installed.
Use 'sldrtkernel -setup' to install the correct version.

Possible Problem — When trying to connect to the target, the Simulation Errors dialog box displays:

Checksum mismatch. Target code needs to be rebuilt.

Solution — This message indicates that the model structure has changed since the last time code was generated. Rebuild the real-time application. If your model fails to build, delete the .mk and .obj files from the Simulink Coder™ project folder, and then select Build from the Tools menu.

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