6 answers
Glad that it worked. Most often, on Windows machines, if you are running McAfee virus scanner, the McAfee agent listens on tcp port 8081 and keeps it occupied and so you cannot run another application (such as Studio, in this case) on the same port # . So, by changing the Studio's app's port from 8081 to something else (8082) worked!! Good luck with the rest of the class.
-gopal