Developer giving error on runing at Linux 8

I am evaluating the WebMethods.I installed it at Linux 8.When I am trying to running it , it is giving the following error

[root@localhost Developer4]# bin/integrator.sh
java.lang.NumberFormatException: multiple points
at java.lang.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:1073)
at java.lang.Float.valueOf(Float.java:187)
at com.sun.java.swing.plaf.windows.WindowsLookAndFeel.initialize(WindowsLookAndFeel.java:108)
at javax.swing.UIManager.setLookAndFeel(UIManager.java:393)
at javax.swing.UIManager.setLookAndFeel(UIManager.java:424)
at com.wm.ui.UiApplication.init(E:/id4.6sp2ismp/Congo/b2bui/source/com/wm/ui/UiApplication.java:132)
at com.wm.ui.UiApplication.(E:/id4.6sp2ismp/Congo/b2bui/source/com/wm/ui/UiApplication.java:111)
at com.wm.app.b2b.dev.DevMain.(DevMain.java:131)
at com.wm.app.b2b.dev.DevMain.create(DevMain.java:90)
at com.wm.app.b2b.dev.DevMain.main(DevMain.java:352)
Developer 4.6 Build 939
java.lang.NullPointerException
at com.wm.ui.tree.TrEditor.updateActionList(E:/id4.6sp2ismp/Congo/b2bui/source/com/wm/ui/tree/TrEditor.java:1015)
at com.wm.app.b2b.dev.service.SvcRecordTree.updateActionList(SvcRecordTree.java:265)
at com.wm.ui.UiActionCoordinator.updateAllActionLists(E:/id4.6sp2ismp/Congo/b2bui/source/com/wm/ui/UiActionCoordinator.java:443)
at com.wm.ui.tree.TrEditor.updateAllActionLists(E:/id4.6sp2ismp/Congo/b2bui/source/com/wm/ui/tree/TrEditor.java:999)
at com.wm.ui.tree.TrEditor.setModified(E:/id4.6sp2ismp/Congo/b2bui/source/com/wm/ui/tree/TrEditor.java:810)
at com.wm.app.b2b.dev.service.SvcRecordTree.setModified(SvcRecordTree.java:124)
at com.wm.app.b2b.dev.service.SvcRecordTree.setData(SvcRecordTree.java:173)
at com.wm.app.b2b.dev.service.SvcRecordTree.(SvcRecordTree.java:66)
at com.wm.app.b2b.dev.service.SvcRecordView$RecordPanel.init(SvcRecordView.java:328)
at com.wm.app.b2b.dev.service.SvcRecordView$RecordPanel.(SvcRecordView.java:321)
at com.wm.app.b2b.dev.service.SvcRecordView.init(SvcRecordView.java:57)
at com.wm.app.b2b.dev.service.SvcRecordView.(SvcRecordView.java:47)
at com.wm.app.b2b.dev.DevMainFrame$1.run(DevMainFrame.java:705)
Exception in thread “main” java.lang.NullPointerException
at com.wm.app.b2b.dev.DevMainFrame.updateActionList(DevMainFrame.java:1497)
at com.wm.app.b2b.dev.DevMainFrame.init(DevMainFrame.java:180)
at com.wm.app.b2b.dev.DevMainFrame.(DevMainFrame.java:158)
at com.wm.app.b2b.dev.DevMain.run(DevMain.java:192)
at com.wm.app.b2b.dev.DevMain.main(DevMain.java:354)

I have already set the JAVA_ROOT and B2B_ROOT like

B2B_ROOT=/opt/webMethods/Developer4
JAVA_ROOT=/root/j2sdk1.4.1_03/jre
in the “integrator.sh” file
any help will be usefull for me.
thanks in advance.
Maneesh