Joined Fogbugz.
Managed to zero in closer to the issue. It seems the problem only happens with your latest commit (10) The one before that works as advertised.
Also tried the latest commit on Squeak 4.5 All In One and on the latest Build of Pharo 4 and they both pop up a Debugger instead of the White Crash.
Easy to replicate, even the example on the smalltalkhub page crashes it. Maybe there is some hardware difference, running a Retina mac on Yosemite, could this be it? (vm should be the same)
Steps:
Get Pharo 3
Open Monticello
Add repository.
Open repository.
Choose latest commit (10)
Load
Open Workspace
Paste in example and Do It -> White screen press esc to remove.
Nice to have a user trying it out. I'll look into the problem, but can I have more info on reproducing it.
* WAComponent is Seaside right? How did you load it, and into what version of Pharo?
Nice eagle eye. That must have been there a long time without anyone noticing. Now I find three occurrences of that spelling in the image.