perl.exe has stopped working

Hello:


       I just installed 14 security updates for Vista x64, and now "R 
CMD build packagename" terminates, saying, "perl.exe has stopped 
working".  I reinstalled Rtools211 using the latest version after 
uninstalling the version I installed on 4/3/2010.


       What do you suggest?  I can install the latest version of perl 
from "www.perl.org" (5.12.1), but I thought I'd ask here first.


       Thanks,
       Best Wishes,
       Spencer Graves