Okay amish, I checked that link--no help. I already installed the printer via the GUI--it was easy and I thought it was going to work.
Here's what I think: I have the .ppd file in the wrong place.
"/usr/lib/cups/filter/foomatic-rip failed" implies to me that the foomatic rip program is not finding what it's looking for, i.e. the driver.
With Ubuntu, I can't drag and drop into the "File System." I think I need to send the driver file there via the Terminal/Command window somehow with the SUDO command--and I just don't know how to do that yet.
I basically need "over-the-shoulder" tech support.