[amelia] "Amelia Error Code: NA"

My imputation gets very close to completion, and then suddenly gives me the following error message: {Amelia Error Code: NA c(1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1104, 1104, 1104, 1104, 1104, 1104, 1104, 1104, 1104, 1104, 1104, 1104, 1104, 1104, 1104, 1104, 1104, 1104, 1104, 1104, 1104, 1104, 1104, 1104, 1104, 1104, 1104, 1104, 1104, 1104, 1104, 1104, 1104, 1104, 1104, 1104, 1106, 1106, 1106, 1106, 1106, 1106, 1106, 1106, 1106, 1106, 1106, 1106, } This basic pattern is then repeated dozens of times, with different numbers following the "c(". I'm trying to impute a variable with over 90% missing-could that be part of the problem? Eric McGhee Assistant Professor Department of Political Science 1284 University of Oregon 1415 Kincaid Street Eugene, OR 97403-1284 (541) 346-4861