You install java 7 64bit, navigate to the folder it was installed, copy the jre7 folder to the Starsector folder, and rename it jre after removing the old one.
Interesting, now that I've done that, I'm getting a different error. Any ideas?
Fatal: Error compiling [data.scripts.plugins.EngineKillEffect]
Cause: data.scripts.plugins.EngineKillEffect
51839 [Thread-5] DEBUG com.fs.graphics.TextureLoader - Loading [graphics/ships/atlas_af.png] as texture with id [graphics/ships/atlas_af.png]
51843 [Thread-5] DEBUG com.fs.graphics.TextureLoader - Loaded 613.05 MB of texture data so far
51844 [Thread-5] INFO com.fs.graphics.TextureLoader - Cleaned buffer for texture graphics/ships/atlas_af.png (using cast)
52611 [Thread-5] ERROR com.fs.starfarer.combat.String - java.lang.RuntimeException: Error compiling [data.scripts.plugins.EngineKillEffect]
java.lang.RuntimeException: Error compiling [data.scripts.plugins.EngineKillEffect]
at com.fs.starfarer.loading.scripts.ScriptStore$1.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: data.scripts.plugins.EngineKillEffect
at org.codehaus.janino.JavaSourceClassLoader.findClass(JavaSourceClassLoader.java:165)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 2 more