[Help Me] I've got a problem when installing weblogic 6.0 server ...

[loveidea]

Hi
I've got a problem when installing weblogic 6.0 server.
I don't know why throwing Exception..
message is ..

twd:/home/weblogic> java -version
java version "1.3.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0)
Java HotSpot(TM) Client VM (build 1.3.0, mixed mode)

twd:/home/weblogic> uname -a
SunOS twd 5.7 Generic_106541-10 sun4u sparc SUNW,Ultra-60
twd:/home/weblogic> sh web*.bin -i console
Preparing to install...
Preparing CONSOLE Mode Installation...

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

1- English

CHOOSE LOCALE BY NUMBER: 1
============================================================================
===
WebLogic Server 6.0sp1 (created with InstallAnywhere by Zero
G)
----------------------------------------------------------------------------
---

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

Stack Trace:
java.lang.NullPointerException
at java.util.StringTokenizer.<init>(StringTokenizer.java:122)
at java.util.StringTokenizer.<init>(StringTokenizer.java:138)
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-
twd:/home/weblogic>

thanks in advance..