Passing arguments to squeak image

Hi,

Using latest SVN Squeak, I'm having trouble passing arguments to an image.

As far as I can see from the usage, it looks like "squeak foo.image
bar" should pass bar as an argument to the image. Instead, though, I
get a load error (the problem seems to be that Squeak is trying to
load the url "file:bar" using the CodeLoader).

Is this a bug, or am I doing something wrong?

Cheers,

Patrick