New Data Source no content in dropdown; error

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New to Mango, went to set up New Data Source, and dropdown box is short, no choices.
When I try to click the Add button, I get an error:

Is this normal?
Could this be because I do not yet have any physical (serial) connections to this PC?

Thanks,
Cartoad

This is only normal if you don't have any data source modules installed. Go to your Modules page and you should see a list of installed modules. You can also check for updates and see if there are any new modules you don't have installed. It's possible you downloaded the Mango core without any modules. If this is the case you can add them through the update process on the Modules page.

Oh my! Thank you so very much! Will do first thing tomorrow and report back!
Cartoad