after upgrading to os josemite cs4 applications will not run. Message displayed that I need to install the legacy java SE 6 runtime. Is this necessary to fix the application loading?

Found the answer:

Java for OS X 2014-001 includes installation improvements, and supersedes all previous versions of Java for OS X. This package installs the same version of Java 6 included in Java for OS X 2013-005.

installed above and it now works

Blessings