MultiMonitor: Java NPE when mouse is in other screen than the found match to be clicked

did you save the script, before running?

what happens if you say:
Algo_reg=Region(x,y,w,h)
p = Pattern("InspectionPlane.png").similar(0.80).targetOffset(300,0)
m = find(p)
Algo_reg.click(m)

Yes, I save the script. And this error does not happen every time, sometimes the script could work, but sometimes error happens

Be sure to not have any characters besides letters, numbers, hyphen and underscore in your script's path/filename and definitely no blank.

You might with to version 1.1.0 (sikulix.com)

I have no such illegal characters in the file name or path name, see this button is named as "lynn_clear" and it is put under D:\Sikuli\C18283_InspArea.sikuli

Actually when the first time I run the script, it is working. while when I repeat run this then the error happens

I found the reason. I am using Sikuli on the laptop with 2 displays. So when the script is running and the button is found, if the mouse is in another screen then the error happens; if the mouse is in the same screen with the button, then no problem.

Thanks for the feedback:
In multi monitor setups, there are still some weird situations.
Is on the list to be thoroughly tested and will surely be fixed.