Uninstall then Re-install Java.
Start with the newest version and work backwards. You should only have the newest compatible Java on the PC that Metasys (at whatever version you're running) supports. For instance, you shouldn't have any Java 7... no Java 6 Update 23 for you if you're rocking 4.1, etc. If you don't know what versions are compatible let me know what version of MSEA you're running (including patch) ... for instance the newest version at this moment is 5.2.10 (5.2 w/ the 5.3 CCT/GGT1.2 patch to .10). No need to install older version of Java unless you're running a dinosaur like 2.2 were you had to have two versions installed..
I had a similar issue about a year ago with a site. Checked and found an updated driver for my monitor. Fixed problem instantly. Just food for thought.
check object category then uninstall JAVA and re-install the "old"
version of JAVA that is needed.