Serg Koren wrote:
> 
> What set of files do I need to download to get a clean 3.0+ setup
> running that doesn't encounter a Message not understood:
> "isSeparator" walkback on launch?
> 
> I have the 3.0Alpha8MT
> 3.0 image
> 3.0 changes
> V2.sources renamed to V3.sources (since I couldn't find a V3 sources)

The renamed V2.sources may be your problem.  (You'll certainly be missing a lot of source code with the old sources file.)

The V3 Sources file is available on the Squeak ftp site, in the 3.0 directory:

ftp://st.cs.uiuc.edu/pub/Smalltalk/Squeak/3.0/SqueakV3.sources.gz


- Doug Way
  dway at riskmetrics.com