Marty, your zip file is fine and works also.
Not sure what is not working for you so let me tell you the steps to take:
Login the backend -> community builder -> plugins
Click install plugin and select the file you posted here. Click upload and you should see a message that says success.
If there is an error message, please post it here.
You can also double check the file location:
root/components/com_profiler/plugin/language/
there should be a new "cbpaidsubscriptiondutch" folder.
Before install, make sure you take it out to be sure.
To recap:
You need to install it as a plugin, instead of manually changing files.
What you did was right but just not the right way.