Painter thread error?

[Dick]

Been trying to make a teak chopper and burner.

Went to set up everything and got this:

[ERROR][04/12/14 08:19:31 PM]: Error on painter thread!
java.util.ConcurrentModificationException
	at org.osbot.lPT3.B(fj:339)
	at org.osbot.xA.next(fj:376)
	at org.osbot.engine.Bot.B(ef:273)
	at org.osbot.engine.canvas.BotCanvas.B(wk:102)
	at org.osbot.lA.run(am:165)
	at java.lang.Thread.run(Unknown Source)

What is this and how do i fix it

 

EDIT: Please.

Edited April 12, 2014 by Dick

[Extreme Scripts]

Post a screenshot of your onPaint() method please.

[Sigma]

Internal client error, all the methods are obfuscated. The error means it's trying to access something in a data structure while modifying it.