After compiling, you can get a *.so file. Your model uses the *.so file to access the user subroutine. Before running the RecurDyn/Solver:
• Make sure that the *.so file is located in the same working directory as the RMD file.
• Checking that the user subroutine name (and path) in the RMD file matches the name and location of the *.so file.
You do not prepare to execute the RecurDyn/Solver with the custom user subroutine.