On Wed, Oct 03, 2007 at 11:01:04PM +0100, Zulq Alam wrote:
> This seems related to:
> 	
> http://www.nabble.com/argument-of-ifNotNil:-must-be-a-0-argument-block-t2205353.html
> http://bugs.squeak.org/view.php?id=4867
> 

These two Mantis entries are both (duplicate) reports documenting the bug, and both
have discussion and proposed fixes:

http://bugs.squeak.org/view.php?id=4867
http://bugs.squeak.org/view.php?id=6426

Dave