In my case the installer finished okay. It pulled in miniconda, nvidia-toolkit and "Mistral 7b int4". Upon launch it opens a gradio-chat session. For the datasets it supports .txt, .pdf, .doc files. There's a "YouTube URL" option and "AI model default".

When asked "What is ChatWithRTX" the reply was:

    Chat with RTX is not mentioned in the given context information. It is 
    possible that it is a separate event or feature that is related to the 
    NVIDIA Lounge at LTX 2023 or QuakeCon 2023, where attendees can interact 
    with a virtual assistant or chatbot powered by NVIDIA's GeForce RTX 
    technology. However, without more information, it is impossible to provide a 
    more detailed answer.
    Reference files: portal-prelude-rtx-inside-the-game-interview.txt