title: "selection cannot be launched and there are no recent launches" when using pydev/eclipse
body: <p>I am getting the above error when launching a python file that worked in the past.  I think I know how this happened but not sure how to fix it.  I have 2 computers dual booting different os and use dropbox to stay synced between them all.  In the past I synced my eclipse workspace with my mac and windows computers this way and everything worked fine(except I would have to change the location of the python interpreter depending on what system I was using).</p>
  
  <p>I started getting the above message after I added a linux(fedora) to share dropbox files.  But my problem is now when I try to update my python interpreter(in windows) it doesn't save my setting.  I can hit autoconfig and it'll find the python path and all the files and I hit apply/okay, but when I go back its all blank.  I'm pretty sure the linux machine messaged my settings up, but I need to develop on all 3 boxes so I need them to be kind of synced.</p>
  
  <p>Wondering how to fix this and if there's another way to do this so I don't have this problem in the future?</p>
  
  <p>update: this def. has something to do with my workspace.  When I change the default workspace to a new folder and set the python interpreter it works.  Still not sure how to permanently fix this(don't want to have to copy code back and forth to new workspaces.</p>