UI scripting Shake

Hi I am trying to click a button in Shake using Applescript. For example.

activate application "shake"
tell application "Extra Suites"
	ES move mouse {380, 1090}
	ES click mouse
	--delay 2
	delay 2
end tell

Either Using System events or Extra Suites always causes the script to hang like it is looking for Shake. If I create the same kind of script to control the finder or safari it works fine. Does anyone have any suggestions what I can do?
Pete O’Connell