The org.lcsim software requires Java JDK 5.0 (also know as Java 1.5 to confuse you). You can download and install JAS3 it from:
ftphttp://ftpjava.slacsun.stanford.educom/software/jas/JAS3/v0.8.0rc3j2se/1.5.0/download.jsp
You can download and install JAS3 from:
After installing JAS3 run the application and from the menu bar choose:
View, Plugin Manager
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