I am trying to use DrewPre's Back up app.
I have installed it and the service. I have been able to open the app and try to make back ups. However this is where everything stops. As far as we can tell the problem is my installation of GNU Tar. According to PreWare and WebOSQI GNU Tar is installed. However when I use the command:

ls -l /opt/bin/
There is no Tar file present. I have uninstalled and re-installed the GNU Tar ipk from the Optware index. What can I do to fix this?