I have a portable copy of "NVDA on a thumb drive in a folder called NVDA211. It contains NVDA version 2021.1. When I shut down my installed NVDA, switch to the thumb drive and execute a batch file that starts the portable version, it starts in a command mode that does not accept commands; nor will it exit back to windows. This does not seem normal to me. Wonder how I can make it stay in windows when I start the portable?