Аналогично. С хитрыми классами не запускается, причем SS JE 4.2 тоже.
Может быть, дело в версии Java?
У меня Java 2 Runtime Environment SE v1.4.2_09.
При запуске из командной строки получаю:

C:\Program Files\ServerStudioJE>java -cp . launcher
Server Studio JE 4.2
Copyright 1998-2004 AGS Ltd. All rights reserved.
Home path is null
Unable to start Server Studio JE:
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Sou
rce)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at launcher.main(launcher.java:83)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at ssj.<init>(ssj.java:268)
... 5 more
Caused by: java.lang.NoClassDefFoundError: javax/help/HelpSet
at com.agsltd.ifxstudio.api.workspace.StudioApplication.a(StudioApplicat
ion.java:304)
at com.agsltd.ifxstudio.api.workspace.StudioApplication.setMainHelpFile(
StudioApplication.java:74)
at a.a.a.h.e(a/a/h.java:707)
at a.a.a.h.c(a/a/h.java:676)
at a.a.a.h.main(a/a/h.java:145)
... 10 more
C:\Program Files\ServerStudioJE>

Кто-нибудь поможет?