View results only works as a workflow during debugging - as a standalone app it goes nowhere. I'm looking for a way to display all the results in a simple window (simpler than showing as finder items), and not finding much. My current answer is to use a python script step with Tkinter, adding a listbox for my items.
from Tkinter import *
root = Tk()
sb = Scrollbar(root)
lb = Listbox(root, yscrollcommand=sb.set)
for f in sys.argv[1:]:
index = lb.size() - 1
if index % 2:
lb.itemconfig(index, bg='light blue')
This code creates a window with a scrolling list, with coloured alternating rows, and because automator tends to eat python tracebacks (they are shown as an error, but only the first line to stderr is shown), I reroute the traceback to stdout and return with a 0 error code so I can see the traceback in the results tab.