help with rsbot?

when i use a script and it logs in after taking a break, it doesnt click te welcome screen and has this message:

[20:28:12][ Chopniak] java.lang.NullPointerException
at com.speljohan.rsbot.script.Calculations.worldToMinimap(Calculations.java:107)
at com.speljohan.rsbot.script.Methods.worldToMinimap(Methods.java:2148)
at com.speljohan.rsbot.script.Methods.tileToMinimap(Methods.java:632)
at com.speljohan.rsbot.script.Methods.walkTileMM(Methods.java:401)
at Chopniak.loop(Chopniak.java:424)
at com.speljohan.rsbot.script.Script.run(Script.java:102)
at com.speljohan.rsbot.script.ScriptHandler$1.run(ScriptHandler.java:70)
at java.lang.Thread.run(Unknown Source)

[20:28:12][ Chopniak] Script stopped.

Is it because of my anti randoms or the script? or something else? help, thanks