What happens when you double click the ruler.ahk file?
When I double click the file it opens in notepad because that is how I told it to handle a .ahk file so I could use it as an editor.
If I right click and tell it to open with Autohotkey it tells me there is an error on line 1 of the script.
Scott, I think you are right. I don't think it will work with Windows XP and it seems to work for everybody else. I hate it because I really wanted what it does. I even envisioned doing a compass row to overlay the windsock to get an exact angle of the wind.
I guess I will have to keep using the blue rectangle as a ruler.
Thanks for your help.