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Failed to load data set after updating with iOS5.1

Hi, everyone. I have been updated the iOS5.1 and xCode 4.3.1 and then there was some message. I attached my dataset called Test.dat and Test.xml ============================================== - (QCAR::DataSet *)loadDataSet:(NSString *)dataSetPath {...} 2012-03-30 14:15:51.509 ImageTargets[2504:5c13] Failed to load data set. 2012-03-30 14:15:52.097 ImageTargets[2504:5c13] QCARutils: Failed to load any target =============================================== It does not matter at iOS5 (before) How do I fix it?? Please~ Help me~ Thank you a lot,,,

Hi dboptimize, I hear our friends over at Unity have had some problems with Xcode 4.3.1 as well - try using 4.3.0 or 4.3.2 before we look any further. The symptoms are similar to using a jail broken phone when the checking of the signed dataset fails (although we're not seeing the security message