OK, I have followed all the Wiki docs and forum suggestions to create a custom install of our Joomla.
As a background, this was working great with a custom version of Joomla we created overwriting the Soft version.
Now we're trying to expand that into 2 custom Joomla installs. We have what we call JumpStart packages (pre-configured variations of Joomla), one for a basic customized Joomla and the other has a Cart bolted onto it.
What we did was install the softaculous_extra.php in the hooks dir as documented. Then we launched Soft under WHM and added the custom script via the Wiki. Then we checked to make sure that the softaculous_extra.php array ID matched the cscripts.php, and they do.
Then we edited the WHMCS Product Custom Field we had created when we installed it and added the package name exactly as it's typed in the softaculous_extra.php name field in the array.
The softname is 7 characters and is named exactly like the dir we created under /var/softaculous/jumpstar (jumpstar, 7 characters matching the softname).
When we go to install, the custom Joomla installation isn't installing. Are we missing something? The jumpstar directory is just a copy of the default joomla install directory with our customized joomla.zip and joomla.sql.
This was working when replaced your ZIP and SQL files but, when trying to get the custom version working, no go. :(