lumaqq运行问题

Question

各位朋友,你们好,这是我装上后lumaqq运行出现的问题,望大家指点
[root@localhost LumaQQ]# Exception in thread "main" java.lang.NullPointerException
at edu.tsinghua.lumaqq.ui.sorter.ModelSorter.compare(ModelSorter.java:69)
at edu.tsinghua.lumaqq.ui.sorter.ModelSorter.compare(ModelSorter.java:1)
at java.util.Arrays.mergeSort(Arrays.java:1284)
at java.util.Arrays.sort(Arrays.java:1223)
at edu.tsinghua.lumaqq.widgets.qstyle.QTreeViewer.refresh(QTreeViewer.java:230)
at edu.tsinghua.lumaqq.widgets.qstyle.QTreeViewer.setInput(QTreeViewer.java:500) at edu.tsinghua.lumaqq.ui.helper.BlindHelper.initTreeMode(BlindHelper.java:545)
at edu.tsinghua.lumaqq.ui.helper.BlindHelper.resetMode(BlindHelper.java:729)
at edu.tsinghua.lumaqq.ui.helper.BlindHelper.setTreeMode(BlindHelper.java:825)
at edu.tsinghua.lumaqq.ui.MainShell.setClient(MainShell.java:321)
at edu.tsinghua.lumaqq.LumaQQ.main(LumaQQ.java:149)