While executing a run.sh while installing a tcserver-6.0.19.A-linux64, the error is encounterd

( The java class could not be loaded. java.lang.UnsupportedClassVersionError: com/orangevolt/tools/ant/stub (Unsupported major.minor version 49.0)

Below is my server Setup:

tcserver-6.0.19.A-linux64]$ export JAVA_HOME=/usr/java/jdk1.6.0_13/
tcserver-6.0.19.A-linux64]$ $JAVA_HOME/bin/java -version
java version "1.6.0_13"
Java(TM) SE Runtime Environment (build 1.6.0_13-b03)
Java HotSpot(TM) 64-Bit Server VM (build 11.3-b02, mixed mode)

I changed run.sh to execute the correct Java version.
tcserver-6.0.19.A-linux64]$ cat run.sh
/usr/java/jdk1.6.0_13/bin/java -cp .:ijars/groovy-all-1.6.1.jar:ijars/installer.jar installer