You will need to install Matlab Runtime 2019b if you don’t have Matlab 2019b installed. The programs for BDP and SVReg are built using the Matlab Compiler for version 2019b, so they require that specific version of the runtime libraries.
There won’t be a conflict with your existing installation. The files are located in a separate directory and the different versions of Matlab products will load the appropriate libraries.
If you install Matlab or the Matlab runtime library to the default location, the scripts should find it. If you installed it somewhere else, you can set an environment variable ‘BrainSuiteMCR’ on Linux or Mac before running the script. For Linux, the default for the Matlab runtime would be: