> How exactly do you run the tests? Download image, fire it up, open
> TestRunner, run tests... and nothing else?

Go to Help | About this System and then select the "SUnit" category.

> When you run the tests, I'll bet
> MCMethodDefinitionTest>>testLoadAndUnload brings up a FITBM asking for
> initials, and that breaks all these tests.

Why do you say that's breaking the tests?  If you "Do It" on one of
the failed MC tests it opens the debugger showing the failed assertion
even though initials have already been set.

These tests weren't failing in 4.3 anyone know what happened?

> http://bugs.squeak.org/view.php?id=7700 will fix this, when it's done.

The way to handle this is for the "automation" (i.e., CI or whatever)
to handle the appropriate UIManager notification (sorry can't remember
what its called at the moment).