用WEB版scifinder启动画图功能时出现如下错误(求解决方法,悬赏5000币)

请懂行的兄弟指点一下，如能解决这个问题愿以5000愚愚币作为酬劳
load: class org.cas.oscar.server.apps.scifinder.wb01.applet.casdraw.CASDrawApplet not found.
java.lang.ClassNotFoundException: org.cas.oscar.server.apps.scifinder.wb01.applet.casdraw.CASDrawApplet
                at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
                at java.lang.ClassLoader.loadClass(Unknown Source)
                at java.lang.ClassLoader.loadClass(Unknown Source)
                at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
                at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
                at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
                at java.lang.Thread.run(Unknown Source)
Exception: java.lang.ClassNotFoundException: org.cas.oscar.server.apps.scifinder.wb01.applet.casdraw.CASDrawApplet

好多钱啊，可惜不会，都没有用过web SF

CASDrawApplet好像还是个绘图的java程序，换其他学校，也是这样？装了java虚拟机？

java已经是最新版的了

Windows

CAS has thoroughly tested SciFinder with Java Runtime Environment (JRE) Version 6 Updates 2, 3, 4, 5, 7, and 10.  To learn more about the plug-in and download a recommended version, visit the Java web site.

Macintosh

For Mac OS X 10.4, CAS recommends Java for Mac OS X 10.4, Release 6, which is available at www.apple.com/downloads/macosx/apple/macosx_updates/javaformacosx104release6.html.

For Mac OS X 10.5, CAS recommends using the default JRE installed by Apple.

CAS signs the code for the structure drawing editor with a VeriSign® code signing certificate. The security warning gives you a chance to trust or not to trust the code from CAS. The structure drawing editor performs more sensitive operations, such as reading in your queries from the file system and saving your queries to the file system. As such, the code needs to be signed, and the certificate with which it was signed, needs to be vouched for by a Certificate Authority. Note that there is a check box, "Always trust content from this publisher."

[VeriSign certificate]

If you choose not to accept the certificate, and therefore, not to run the structure drawing editor, you can still perform structure and reaction searching by importing your query.

[Import only]

Note that if you change your mind and allow the signed code to execute, you will need to sign out of SciFinder, close your browser, and sign in again.

For more detailed help, see http://www.cas.org/help/scifinder/understand.htm#script

java和图片保存方式的问题吧
以前搜过，没有出现这个问题啊

我已经出现上面那个图像了
点了以后, 就出现
The structure drawing editor is opening
进度条, 不动了

看java的记录就是
load: class org.cas.oscar.server.apps.scifinder.wb01.applet.casdraw.CASDrawApplet not found.
java.lang.ClassNotFoundException: org.cas.oscar.server.apps.scifinder.wb01.applet.casdraw.CASDrawApplet
                at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
                at java.lang.ClassLoader.loadClass(Unknown Source)
                at java.lang.ClassLoader.loadClass(Unknown Source)
                at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
                at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
                at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
                at java.lang.Thread.run(Unknown Source)
Exception: java.lang.ClassNotFoundException: org.cas.oscar.server.apps.scifinder.wb01.applet.casdraw.CASDrawApplet

我的没有问题，用的是官方最新版的java