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1. Open a terminal window

2. Enter the following and then press `return`
   

   Code Block
   language bash
   sudo codesign --deep -fs - <library path>

   where <library path> should be replaced with the library path from the table above. Please note the spaces surrounding the trailing -.
   
   For example, for Imatest 2021.1, you would run
   

   Code Block
   language bash
   sudo codesign --deep -fs - /Applications/MATLAB/MATLAB_Runtime/v99/bin/maci64/libcudart.10.2.dylib

3. [Optional] Verify that the library was successfully code-signed by running the following
   

   Code Block
   language bash
   codesign --verbose --verify <library path>

   
   If the code-signing operation was successful, you should see output similar to
   

   Code Block
   language bash
   codesign --verify --verbose /Applications/MATLAB/MATLAB_Runtime/v99/bin/maci64/libcudart.10.2.dylib /Applications/MATLAB/MATLAB_Runtime/v99/bin/maci64/libcudart.10.2.dylib: valid on disk /Applications/MATLAB/MATLAB_Runtime/v99/bin/maci64/libcudart.10.2.dylib: satisfies its Designated Requirement

4. Start Imatest as normal and attempt the operation that previously frozen .
   

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