I re-installed nexerelin but now the game crashes with this error:
java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
at java.util.ArrayList.rangeCheck(Unknown Source)
at java.util.ArrayList.get(Unknown Source)
at com.fs.starfarer.loading.scripts.ScriptStore.Ò00000(Unknown Source)
at com.fs.starfarer.settings.StarfarerSettings.o00000(Unknown Source)
at com.fs.starfarer.launcher.ModManager.getEnabledModPlugins(Unknown Source)
at com.fs.starfarer.loading.ResourceLoaderState.init(Unknown Source)
at com.fs.state.AppDriver.begin(Unknown Source)
at com.fs.starfarer.combat.CombatMain.main(Unknown Source)
at com.fs.starfarer.StarfarerLauncher$1.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
If I disable graphicslib and the Ship and Weapons pack then the game starts up fine.
Edit: Clearly it was a graphicslib issue...re-installed and everything works now.