R help - Dec 2011 - Incorrect Number of Dimensions in Zelig with setx()

I'm running an ordered logit in R with the Zelig package and am trying to
calculate some predicted probabilities. However, I get the following error
message.
> x.low <- setx(mod, cars=1)Error in dta[complete.cases(mf), names(dta)
%in% vars, drop = FALSE] :
  incorrect number of dimensions


I googled this problem and couldn't find anything, minus a question by

me on this same problem from 1.5 years ago. Just don't remember what I

did to solve the problem.


Help!


-- 
*Abraham Mathew
Statistical Analyst
www.amathew.com
720-648-0108
@abmathewks*

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