Cosmic bit flipping? Shortly after the zephyr discussion of this, I kicked off an install of workstation (in VMware) and it "just worked" (and in fact /usr/share/fonts/truetype/msttcorefonts/README exists). I'll note that I had also kicked off an install on granola, which also worked fine, right before Ben installed the 790. Furthermore, the error is baffling and should be impossible. It says cannot create /usr/share/fonts/truetype/msttcorefonts/README: Directory nonexistent, however /usr/share/fonts/truetype/msttcorefonts/ is shipped in the package. So something awesome is happening on that 790, to the point that the postinst appears to be running _before_ the package is unpacked?