Crash updating concentration curves (batch loaded data)

[sgilroy]

I created some data via the special control-click mechanism in the emulator. Crash occurred when curve was being updated. After exiting and relaunching CollaboRhythm I was unable to reproduce the crash, even after the autoUpdateTimer went off.

[trace] Updated curve for 3 ML insulin detemir 100 UNT/ML Prefilled Syringe Levemir with 66 data points from 3 MedicationAdministration documents
[Fault] exception, information=RangeError: Index '-49' specified is out of bounds.
at mx.collections::ListCollectionView/getItemAt()[E:\dev\4.y\frameworks\projects\framework\src\mx\collections\ListCollectionView.as:502]
at mx.collections::ListCollectionView/http://www.adobe.com/2006/actionscript/flash/proxy::getProperty()[E:\dev\4.y\frameworks\projects\framework\src\mx\collections\ListCollectionView.as:874]
at collaboRhythm.core.model.healthRecord.service::MedicationConcentrationCurveBuilder/createNewConcentrationCurve()[C:\cr\CollaboRhythm.Core.Model\src\collaboRhythm\core\model\healthRecord\service\MedicationConcentrationCurveBuilder.as:186]
at collaboRhythm.core.model.healthRecord.service::MedicationConcentrationCurveBuilder/updateConcentrationCurve()[C:\cr\CollaboRhythm.Core.Model\src\collaboRhythm\core\model\healthRecord\service\MedicationConcentrationCurveBuilder.as:84]
at collaboRhythm.core.model.healthRecord.service::MedicationAdministrationsHealthRecordService/updateMedicationConcentrationCollections()[C:\cr\CollaboRhythm.Core.Model\src\collaboRhythm\core\model\healthRecord\service\MedicationAdministrationsHealthRecordService.as:149]
at collaboRhythm.core.model.healthRecord.service::MedicationAdministrationsHealthRecordService/autoUpdateIfTimeElapsed()[C:\cr\CollaboRhythm.Core.Model\src\collaboRhythm\core\model\healthRecord\service\MedicationAdministrationsHealthRecordService.as:112]
at collaboRhythm.core.model.healthRecord.service::MedicationAdministrationsHealthRecordService/autoUpdateTimer_timerHandler()[C:\cr\CollaboRhythm.Core.Model\src\collaboRhythm\core\model\healthRecord\service\MedicationAdministrationsHealthRecordService.as:97]
at flash.utils::Timer/_timerDispatch()
at flash.utils::Timer/tick()