Try renaming the folder so there's no space in the name, and then you won't have to use quotes on the start command. Quotes don't get passed well without double quotes and other ridiculousness with nested commands like that. ;-)

Spaces, ampersands, and other special characters (like & or %, etc.) don't do well with shell commands, especially when calling one batch file from another. Hyphen and underscore are usually OK (- and _). I'd remove all of those and try again with some simple folder and file names. Also, remove the cd as you don't need to change directories to call a batch file from a folder with a start command.

For example, mine looks like this:
start C:\express-generator\generate.cmd

It works for me when I don't use spaces or quotes. A shortcut can use quotes, but to use them on a nested command line (one .cmd starting another .cmd) probably requires double quotes to pass it properly to the next environment, or change the names to avoid using quotes altogether, which means no spaces or certain characters like %, &, etc.

My .cmd file is in my C:\express-generator\ folder. But I've created a shortcut to that .cmd file.

Maybe I am going about this in the wrong way.  What I was hoping if I could get task.cmd to work then maybe I could get Task Scheduler to work so I could automatically start all my expressgenerators at one time so I could automatically collect strategies for all my chosen currency pairs late on Friday night.  So my question is there another way to do this such as is there a way to schedule a time and day to start expressgenerator in power shell or command prompt that can be written in a windows file and be able to automatically run?