Stonybrook environment under Win XP 64

Hi,

I'm having trouble compiling large projects, such as the runtime
library, in the Stonybrook environment under Win XP 64.  Small projects
work fine.  Larger projects hang whenever I start a build.  The build
dialog appears, and 4 compile processes are started (one for each
core).  Then the IDE hangs.  No re****t of a successful compile of any
module.  The task manager shows that all of the processes are idle or
waiting.

Anyone else run into this?  Anything I can try tweaking to avoid the
hang?

Thanks,
Scott