Project Import or Gantt Chart does not display with com.matrixone.apps.program.GanttChart.getDependencyColumnValue(GanttChart.java:817) error

When import Project or Display Gantt Chart, the Gantt Chart did not get displayed.

Try not to use 2 dependency together.   Somehow only one dependency is available.
Well, I have not figure out the format for 2 or more dependencies....^^

java.lang.ClassCastException: matrix.util.StringList cannot be cast to java.lang.String
        at com.matrixone.apps.program.GanttChart.getDependencyColumnValue(GanttChart.java:817)
        at com.matrixone.apps.program.GanttChart.getCommonXMLString(GanttChart.java:341)
        at com.matrixone.apps.program.GanttChart.getXMLStringForPlanningView(GanttChart.java:434)
        at com.matrixone.apps.program.GanttChart.createXMLStringForTask(GanttChart.java:261)
        at com.matrixone.apps.program.GanttChart.createXMLStringForTask(GanttChart.java:280)
        at com.matrixone.apps.program.GanttChart.createXMLStringForTask(GanttChart.java:280)
        at com.matrixone.apps.program.GanttChart.getXMLTaskStore(GanttChart.java:221)