Problem with dimnames and thresholds

OpenMx gives an error when selecting variables in a model with thresholds. While the covariance and mean algebras can select a subset of the variables using the supplied dimnames, running a model with thresholds gives a "subscript out of bounds" error when variables are in the data but excluded from the model. Removing either the extra variables or the thresholds removes this error. Tim had updated an ordinal test in models/failing/extraOrdinalVariables about this issue.