Code Signing Certificates: Where to put?

[Bob Sneidar]

I went through the process of creating the 2 certs needed to sign, notarize and staple an app bundle. I imported the certs into my Keychain in System (login didn't seem like the place to put it) and now MrSign'n'Notarize Helper V3 is generating an error which seems to indicate it cannot find the certificate. 
Codesigning app...

executing: codesign --deep --force --verify --verbose --sign "Robert Sneidar (9PV38Bl27Y)" --options runtime --entitlements /private/var/folders/dy/zctnynys6mg69880fpzrmsy00000gr/T/TemporaryItems/entitlements.plist "/Users/bobsneidar/Documents/Livecode Projects/Builds/slySQL Agent MAC/slySQL Agent.app"
/Users/bobsneidar/Documents/Livecode Projects/Builds/slySQL Agent MAC/slySQL Agent.app: replacing existing signature
Warning: unable to build chain to self-signed root for signer "Developer ID Application: <I deleted this so no one can see it>"
/Users/bobsneidar/Documents/Livecode Projects/Builds/slySQL Agent MAC/slySQL Agent.app: errSecInternalComponent
In subcomponent: /Users/bobsneidar/Documents/Livecode Projects/Builds/slySQL Agent MAC/slySQL Agent.app/Contents/MacOS/revsecurity.dylib
process aborted

Is this an issue caused by where I put the certificates? 

Bob S