Application off screen - Mac OS X 10.7

Question

Application is off screen. Happens after using 27inch display. Clearly a resolution issue. Tried everything including playing with the resolution, etc. After looking at several discussions and forums the one that works on my Macbook Air https://discussions.apple.com/message/8012940?messageID=8012940#8012940 does not work on my recently purchased (2 weeks) Macbook Pro 15inch.
After running applescript editor I get this error: error "System Events got an error: Access for assistive devices is disabled." number -25211
Anyone else getting this too?
This is the script Im running.
-- Example list of processes to ignore: {"xGestures"} or {"xGestures", "OtherApp", ...}
property processesToIgnore : {}
-- Get the size of the Display(s), only useful if there is one display
-- otherwise it will grab the total size of both displays
tell application "Finder"
          set _b to bounds of window of desktop
          set screen_width to item 3 of _b
          set screen_height to item 4 of _b
end tell
tell application "System Events"
          set allProcesses to application processes
          set _results to ""
          repeat with i from 1 to count allProcesses
                    set doIt to 1
                    repeat with z from 1 to count processesToIgnore
                              if process i = process (item z of processesToIgnore) then
                                        set doIt to 0
                              end if
                    end repeat
                    if doIt = 1 then
                              tell process i
                                        repeat with x from 1 to (count windows)
                                                  set winPos to position of window x
                                                  set _x to item 1 of winPos
                                                  set _y to item 2 of winPos
                                                  if (_x < 0 or _y < 0 or _x > screen_width or _y > screen_height) then
                                                            set position of window x to {0, 22}
                                                  end if
                                        end repeat
                              end tell
                    end if
          end repeat
end tell

Answer 1

It sounds like you were running a second display in extended desktop mode.
If the adapter and/or cable for the second monitor is still attached, it can fool the Mac into believing the second monitor is still present. Detaching that cable/adaptr and then restarting should fix it.
You can also try going to System Preferences > Monitors and change the setup from extended mode to mirror mode.