java.lang.ArrayIndexOutOfBoundsException: -1
at haven.FightWnd.save(FightWnd.java:570)
at haven.FightWnd$2.click(FightWnd.java:619)
at haven.Button.mouseup(Button.java:185)
at haven.UI.mouseup(UI.java:316)
at haven.HavenPanel.dispatch(HavenPanel.java:432)
at haven.HavenPanel.run(HavenPanel.java:529)
at java.lang.Thread.run(Unknown Source)
Whenever I attempt to save my presets in the Martial Arts & Combat School tab I get the above error and the client crashes.
I'm using Windows 10 64bit, the Java 8 Update 111 (build 1.8.0_111-b14), I have both 32bit and 64bit versions installed but can't actually tell which it prioritises for running the client (official client).
Hopefully someone can help resolve this issue.