Do you also have the optional, tiny JL Cooper circuit card installed in the lcd floppy housing of your 3700? If not, the vcas have no path out to a computer to communicate with the software since the console midi outs "alone" don't carry what the software needs for translation.
I bought the entire JL Cooper system when I bought my 3700 new in 1991 or whenever and I did keep floppy software copies (and also Montebello's stripped-down Faderview), but unless you have the required optional circuitboard, the software doesn't do anything.
I actually sold the circuit card and software some years back to someone (here I think).