When you perform the Diff command in SourceAnywhere Standalone Java Client, the diff tool (MergeHero) is not triggered.
The Java environment is not configured properly.
Please reset the Environment Variables by adding the following lines at the end of /etc/profile file:
JAVA_HOME=/usr/bin/jdk1.5.0_14 (suppose you are using 1.5.0_14)
export JAVA_HOME CLASSPATH PATH
And perform the command "source /etc/profile" after saving the /etc/profile file. You can test if the new setting takes effect by "java -version" command.