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 Cache
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
Other problems
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".
