Hmm, sounds like the Java install is messed up. What is JAVA_HOME set to in the run.bat file? What happens if you open a command prompt, cd to the Arduino directory, and run "run.bat" from there? Does java\lib\rt.jar exist?
Hmm, sounds like the Java install is messed up. What is JAVA_HOME set to in the run.bat file? What happens if you open a command prompt, cd to the Arduino directory, and run "run.bat" from there? Does java\lib\rt.jar exist?