Thanks Croc. The direction so far has helped tremendously. As for your comments, I've cleaned up as much as I could based on what I understand with VBA in Visio.
Excel file with table and code attached if you have any other ideas.
1. Your stencil will most likely have a .vssx extension instead of .vss
-- Yes, I found the new extension as .vssx
2. In newer versions, a combined Start/End master can be used instead of Start and End. If you copy and rename it, you may need to use Masters.Item instead of Masters.ItemU
-- This is working, so not sure whether a change is needed here
3. The line "Set vsoConnectorShape = Visio.ActivePage.Shapes (" line2 ")" is garbage
-- Deleted this line
4. The macro expects the name of the master shape in column 2, not in column 5
-- Couldn't find where this was an error
5. Macro does not use headers in the first row
-- Not sure what to do here
6. It looks like there is some confusion with indices
-- I stepped thru the code with F8, and it does seem to bounce around which I don't understand, but the code did create a flowchart
7. Error handling is done incorrectly and skips program after the first error
-- I did a Google search, but wasn't quite sure why or what to fix here