Running the Jenkins 1.438 installer on Mac OS X 10.7.2 does not result in a working Jenkins installation.
Pointing a browser to http://localhost:8080/ results in a response indicating a 404 file not found error. It appears that the installer is not creating files in the '/Users/Shared/Jenkins/Home' directory, which are expected to be there, resulting in the app failing to initialise correctly.
If I `sudo launchctl unload /Library/LaunchDaemons/org.jenkins-ci.plist` and then `java -jar /Applications/Jenkins/jenkins.war`, then I can get Jenkins to appear, but clicking on "New Job" returns a 500 Server error with a long java stack trace. (attached)
MattBookPro:~ matt$ java -version
java version "1.6.0_29"
Java(TM) SE Runtime Environment (build 1.6.0_29-b11-402-11M3527)
Java HotSpot(TM) 64-Bit Server VM (build 20.4-b02-402, mixed mode)