You should be using some form of version control system, so that if things like these upgrades break then you can easily roll back.
If you don't have access to a version control system, http://opensvn.csie.org offers free (as in beer) svn and trac to those who sign up, however they are located in Taiwan and connection speed isn't what you call screaming if yer in the states. Still it is free so you can't complain.
Mark<><