Opening JCM5: some common issues
JCM5 requires Java 5 or higher
JCM5 will not work with any older versions of java.
Note: Java 5 is the same as J2SE 5.0 or Java version 1.5 (so 1.6 is OK, but 1.4 is not)
The applet below should indicate your Java version:
You can download an updated Java Runtime Environment for free
Java Web Start stores a cache of JCM5 which you can run offline.
- If you accepted to store a desktop shortcut, just click to open it.
Otherwise look in control panel => java => temporary internet files => view.
- If you get an error saying that the jar files are not all signed by the same key, it may be because an old copy of JCM5 remains in your cache - try emptying it
If your web browser disables active content, you must first enable it for these pages (e.g. note yellow bar that pops up at top of IE).
A jar file is a type of zip archive, but it should not be unzipped to run JCM.
Some packaging applications try to unzip any files with extension ".jar"
-in this case right-click, choose "open with"...=> "java executable".