When an SVN operation is in progress (update in my case) and I cancel the operation ("oops wasn't quite ready to build") the svn directory tree is left in a corrup state and needs a "clean up".
It would be nice to either:
1. stop more carefully to avoid this problem
2. give the option to disable aborting during an SVN operation
I’ll see what we can do about disabling SVN termination as an option. In the meantime, I’d recommend the “Stop” button - the semantics of Stop is “finish the current action, then stop the build” whereas the semantics of Terminate is “Stop right now!”
(Some actions which don’t do very much will stop immediately on Stop - ie the Delay action, but ones which may be in an inconsistent state - ie SVN - will wait until the process is complete.)