I'd scale back to pinpoint the error.

Put a test file on G:\ and try deleting that single file.

Then I'd try the same thing using the extension.

Once you're 100% sure your syntaxe is right you can move on :

I'd then move down to the first dir where there's $ sign and try a delete there.

That $ sign might need to be escaped somehow.

Let me know how that goes for you.