weblogic6.1在sun主机下安装的问题,错误信息：java.lang.NullPointerException……

[adijava]

在sunOS5.8下安装weblogic6.1出现问题，具体错误信息如下，请各位帮我看看，谢了！
$ sh weblogic610sp4_sol.bin -i console
Preparing to install...
Preparing CONSOLE Mode Installation...

===============================================================================
Choose Locale...
----------------

1- English

CHOOSE LOCALE BY NUMBER: 1
===============================================================================
WebLogic Server 6.1 (with sp4) (created with InstallAnywhere by Zero G)
-------------------------------------------------------------------------------

Invocation of this Java Application has caused an InvocationTargetException. This application will now exit. (LAX)

Stack Trace:
java.lang.NullPointerException
at java.util.StringTokenizer.<init>(StringTokenizer.java:117)
at java.util.StringTokenizer.<init>(StringTokenizer.java:133)
at com.zerog.ia.installer.steps.ChooseJavaVM.j([DashoPro-V1.2-120198])
at com.zerog.ia.installer.steps.ChooseJavaVM.c([DashoPro-V1.2-120198])
at com.zerog.ia.installer.Main.a([DashoPro-V1.2-120198])
at com.zerog.ia.installer.Main.main([DashoPro-V1.2-120198])
at java.lang.reflect.Method.invoke(Native Method)
at com.zerog.lax.LAX.launch([DashoPro-V1.2-120198])
at com.zerog.lax.LAX.main([DashoPro-V1.2-120198])
GUI-
是不是安装的模式有问题？sunOS自带的jdk版本为：
java version “1.2.2“
Solaris VM (build Solaris_JDK_1.2.2_10, native threads, sunwjit)