Startup file not being added to project

Hello:

(So why is there not a MCU architecture/product submission selection for Cortex-M0?)

Well anyway, I just installed KDM5 and did the PACK installer for the cortex-m0
part I'm using, and I successfully copied and ran the blinky example from the Pack.

So I go to do my own hello world example, create the project, add the CMSIS core
and startup checkmarks in the run-time environment dialog. I then write my main
and build, and get the link error seen here:
i.imgur.com/ey7Rvf8.jpg
You can also see my run time settings on the overlapping window.

This is apparently due to lack of a startup file, according to my googling.
By my estimation I should have a startup file in the device section of the project
files, but as you can see, there is no "+" sign at my device item.

First question is, why not, second is how do you force-add one.
I found the file I need, I think, deep in the bowels of the Keil file system,
but can't find instructions to add it. I would have thought I could right click
on the device thing, but that has no add; it must be another way.

Thanks!