Several WorldServer operations will fail if the supported version of the Java Runtime Environment is not the first Java reference in your path. It is possible to have multiple versions of the JRE on your system. To confirm that WorldServer will find the supported version, type the following in a command window (for Windows) or shell (for UNIX):

> java -version

If the version displayed is not the supported version listed in the WorldServer Supported Configuration Guide, make sure you have a supported version installed, and set your JAVA_HOME environment variable to that version.