Updates:
Status: WontFix
Comment #1 on issue 588 by pekka.klarck: import library with exception in
__init__ do not stop test execution
http://code.google.com/p/robotframework/issues/detail?id=588
This behavior is by design. We don't want one invalid library to stop the whole execution. The error is clearly visible on the console and in the log file so it's easy to see it even when tests are executed.
