pashminakazi opened a new issue #645: Uncaught TypeError: Cannot set property 'x' of undefined (DataGridLayout.js) URL: https://github.com/apache/royale-asjs/issues/645 Project Details are : https://paste.apache.org/cpo8y Test case is available on VDI. Go to Fixed Asset from Select in Menu Go to Reporting Levels -> Region from Setups in Menu File : com/dbz/modules/FA/dbzRptLvl1Setup.mxml In dbzRptLvl1Setup we are using dbzSetupList.mxml which is in Lib in dbzRptLvl1Setup SetupList.setupColumn1.visible=false; (CNIC) SetupList.setupColumn2.visible=false; (Address) those were working as visible=false before changes in SDK on VDI  After changes on SDK there is a exception on Console "Cannot set property 'x' of undefined" So the SetupList.setupColumn1.visible=false; (CNIC) SetupList.setupColumn2.visible=false; (Address) is not visible=false because of this exception i think 
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