Hi John,
Thanks ... here is where i progressed with your message and some questions below 
Starting with a fresh image with 
1. Seaside loaded ... then 
    WAHttpServerAdaptor stop
    Deployment exe generated with default option -> compiles and notepad runs fine
2. Now to also start a seaside server at runtime
    added the line WAHttpServer startOn: 8080 in NotepadSessionManager   
    Generated deployment exe after deselecting all options except RemoveClassBuilder  
        (Has to deselect all options as I was was otherwise getting an "Internal error" on the browser webpage and a popup 
         "unidentified object does not understand #evaluatePendingAction" when pointing to localhost:8080)   
    Ran exe -> notepad started, also Seaside server came up when pointed browser to it  
3. Loaded MaterialDesignLite also - but no matter whatever i did i could not get it to compile /work - Deployment exe crashes / does not work at various stages
It shows 2 server adaptors albeit 1 stopped
I tried using WAServerManager startup / shutdown also
Questions 
1. Is there a GUI tool to see the adaptors and stop (I remember pharo had one)
2. is the command above "WAServerManager startup/shutdown the correct way to stop multiple adaptors or what is to stop and start ?
pls advice on getting both Seaside and MaterialDL to get into deployment
thanks
Sanjay