Successful AdobeCC2017 Build, Acrobat can't update

Hello... I successfully built an Adobe CC 2017 package for Mac with our Education license. Once installed, everything works as it should... applications are licensed, and I can update without having to sign in with an Adobe account. Great. Except, Acrobat DC is the only application that can't update... "An error occurred. Please check for updates again later. Error: 104". The version is 2015.020.20039. I created the installer yesterday.

I also created a Windows installer yesterday, which also installed as it should, and everything can check for updates. Acrobat DC successfully found an update, 2015.020.20049.

Anyone else experiencing this same issue, or know what the deal is? !