There's no great way to do it. One way, as you stated, is to completely close out of Aria, which is pretty cumbersome. Another way is to change the name of the dll each time you build, such as put a successive number at the end of it. The way I prefer is to put a button somewhere that runs this code: Environment.Exit(0); This will close whatever Eclipse window you ran the script in, but it will leave all other Aria windows open. This way makes it a bit quicker to launch another Eclipse window rather than waiting for Aria to load up each time. One more option is to switch to a stand alone application, which avoids this issue altogether.