Installing on RHEL 6

Hello guys, I'm attempting to install soapUI 3.6.1 on a Linux based machine, but at such time I'm having difficulty in doing so.

I do not have direct access to the machine in question, I am using SSH Secure Shell to connect to it. I am trying to use the installation file soapUI-x32-3_6_1.sh, I try to install the program with the following commands;

$ chmod +x ./soapUI-x32-3_6_1.sh

then followed by

$ ./soapUI-x32-3_6_1.sh

Upon executing the last command I see the following logs;

Unpacking JRE ...
Preparing JRE ...
Starting Installer ...
/var/tvinfo/soapUI-x32-3_6_1.sh.20740.dir/jre/bin/java: error while loading shared libraries: libpthread.so.0: wrong ELF class: ELFCLASS64

After speaking to our main IT guy, I was informed that the machine I am attempting to install the program onto is RHEL 6.

I was wondering if the current soapUI is able to be installed on said machine or do I need to use another installation file?