"In CS5.x this is the Web URL setting for the server that you have set the checked the "Testing" option"
This didn't work either. I got another error. Please see pictures attached. 5 small pictures of the steps I took.
pic 1: my settings
pic 2: when i click test
pic 3: when i click select database
pic 4: basic ftp dw cs5 settings
pic 5: adv. dw cs5 settings