The value can be only a single path.
If you set up your environment carefully, you should only need one folder...
If you are running a stand-alone app only, you should only need one location - just pick a folder, drop your extension DLL there and set the env var to that folder.
If you are running Creator only, the easiest way to do this is to drop your extension DLL into the Creator Plugin folder and don't bother setting the env var.
If you are running a stand-alone app AND Creator, the easiest way to do this is to drop your extension DLL into the Creator Plugin folder and then set MPI_CREATOR_PLUGIN_DIR to that folder so that when either Creator or your stand-alone app run, they both will find your extension correctly.
Thanks that is all I needed to know.
I know when loading a creator extension plugin to use the environment variable: MPI_CREATOR_PLUGIN_DIR
Does anyone know if this can only be one directory or if it can be semicolon deliminated to have multiple paths?