"relogit" is unavailable

[whatever]

The ZeligCommon implementation of the relogit model is unavailable.

Call: z.out <- zelig(outcome ~ iv, data = data, model = "relogit", tau = c(.001, .005))

Error:

Error in as.name<http://as.name>(zelig2$.function) :

  attempt to use zero-length variable name

Traceback:

3: as.name<http://as.name>(zelig2$.function)

2: zelig.call(Call, zclist, remove)

1: zelig(outcome ~ pred, data = data, model = "relogit", tau = c(0.001,

       0.005))