I wanted to let you know that there is a known issue in Mac OS X 10.11 (El Capitan) where "some versions of Eclipse may hang during use".
In our case, it causes crashes in PDI when opening dialogs. We are tracking this in our own system:
Eclipse has verified it is a Cocoa bug and not in SWT:
Here's a link to the Apple forums (and with an Apple Developer login you can see the release notes):
Officially (as you may have guessed) we do not yet support El Capitan as a Pentaho platform, here is the component reference for 6.0: