In SOI 4.2 Dashboard, click on 'Preferences', make changes like remove columns or add Tabs etc, then hit 'Save', the changes would not save and there is no
error on the dashboard. The same works in earlier versions like SOI 4.0
Following errors may observed in \SOI\SamUI\logs\soiuis-debug.log
ui.loadJSONDataService_jsp._jspService(240) - org.json.JSONException: Missing value at character 45 of {sid:#344503599627370501#34,type:hour,tz:-5.5}
ui.loadJSONDataService_jsp._jspService(240) - org.json.JSONException: Missing value at character 45 of {sid:#344503599627370501#34,type:hour,tz:-5.5}
ui.saveUserPreferences_jsp._jspService(198) - org.json.JSONException: Expected a ':' after a key at character 707 of {"save":{"Cols":[0,1,2,4,5,6,7,8,9]