lscm can not be launched on RedHat 5.3(32 bit)

/opt/IBM/TeamConcert/scmtools/eclipse/lscm can not be launched, the error message is "lscm: line5: ./../../jdk/jre/bin/javas: No such file or directory", don't know what is "javas", a link or others? I tried to change it to java, but can not launched yet, the error message is:
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Expected coordinates from daemon. Daemon's error:
May 20, 2011 4:59:25 PM com.ibm.team.filesystem.client.internal.LoggingHelper log
SEVERE: Status ERROR: com.ibm.team.filesystem.client code=0 java.io.IOException: /opt/IBM/TeamConcert/scmtools/eclipse/scripts/unix/mkroot: cannot execute com.ibm.team.filesystem.client.internal.HardcodedPermissionUtils$FailedToRunException: java.io.IOException: /opt/IBM/TeamConcert/scmtools/eclipse/scripts/unix/mkroot: cannot execute
com.ibm.team.filesystem.client.internal.HardcodedPermissionUtils$FailedToRunException: java.io.IOException: /opt/IBM/TeamConcert/scmtools/eclipse/scripts/unix/mkroot: cannot execute
at com.ibm.team.filesystem.client.internal.HardcodedPermissionUtils.run(HardcodedPermissionUtils.java:135)
at com.ibm.team.filesystem.client.internal.HardcodedPermissionUtils.mkRoot(HardcodedPermissionUtils.java:171)
at com.ibm.team.filesystem.cli.core.internal.SubcommandLauncher.secureConfigLocation(SubcommandLauncher.java:379)
at com.ibm.team.filesystem.cli.core.internal.SubcommandLauncher.doStart(SubcommandLauncher.java:337)
at com.ibm.team.filesystem.cli.core.internal.SubcommandLauncher.run(SubcommandLauncher.java:148)
at com.ibm.team.filesystem.cli.core.internal.Application.start(Application.java:37)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:194)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:368)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:618)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:559)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:514)
at org.eclipse.equinox.launcher.Main.run(Main.java:1311)
Caused by: java.io.IOException: /opt/IBM/TeamConcert/scmtools/eclipse/scripts/unix/mkroot: cannot execute
at java.lang.UNIXProcess.fullPath(UNIXProcess.java:406)
at java.lang.UNIXProcess.<init>(UNIXProcess.java:178)
at java.lang.ProcessImpl.start(ProcessImpl.java:114)
at java.lang.ProcessBuilder.start(ProcessBuilder.java:479)
at com.ibm.team.filesystem.client.internal.HardcodedPermissionUtils.run(HardcodedPermissionUtils.java:133)
... 17 more
Error securing .jazz-scm:
Unexpected error securing /root/.jazz-scm - java.io.IOException: /opt/IBM/TeamConcert/scmtools/eclipse/scripts/unix/mkroot: cannot execute
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