http://bpaste.net/show/Iipv3P91o7qZu0T4FdCS/ In my thread on the regular AHK forums , obeeb seems to reckon that the reason the Send seems to stop execution is that a Send {a} is actually interpreted like Send {a down}; Sleep 50; Send {a up}. This seems to be correct. I do have a workaround, but tho...