Can't start multi node SNOW cluster

I think you should use something like:

   cl <- makeCluster(lapply(1:2, function(i) winOptions), type =
"SOCK", manual=TRUE)

To allow options to be passed in with the host names, you need to
specify a list of lists.  Using "c(rep(winOptions, 2))" concatenates winOptions
to itself which makes snow think that you're passing in a simple lists of
hostnames.