Java WebStart fails on Mac OS Mountain Lion
After searching several hours for a helpful hint on support pages and FAQs that really (!) work this question:
I need Java WebStart for an application that works on MAC OS X (Mountain) Lion. So far we had no problem with the application on Snow Leopard.
On my MacBookAir the applications starts. On a second system with the same OS and the same Java installations I always receive the well known error window (with the corresponding English message like "you have to load the Java Runtime Environment for Web Start...)
A click on "more information" delivers the java.com web page that offers the JRE download that is already installed.
The corresponding console error message is:
"No Java Web components present, requesting install"
System: Mac OS X 10.8.2, Intel Core Duo
Installed Java:
- Apple 1.6.0_37-b06-434
- Oracle Java SE Run Time environment:7u9)
- Oracle Java SE jdk-7u9-macosx-x64.dmg)
Output of /usr/bin/java -version is: Java SE runtime environment 1.7.0_09-b05
The java.com website signals on the installed version web page): Version7 Update 9 installed.
The Java Control Panel also says:
"Version 7 Update 9 installed"
The Java Control Panel offers no choice to "enable the Java web start".
Any suggestion is very welcome!
Best regards, Werner
The oracle java version here (1.7.0_09-b05) is old and is blocked by Safari as a security risk a see this Apple note. Upgrade to the current JDK which is currently Java SE 7u21.