I'm very interested in your Collabtiv.
I have a Softaculous installer in my cPanel.
As they don't provide any support and
my last installation overrun Joomla completely and
Joomla-installer couldn't find a xml-setup.
I'm wondering how & where do I install Collabtiv
without losing everything else??
We don't do support for the softaculous installer since it is not maintained by us.
Please direct support questions about Softaculous to the Softaculous team.
you can also manually install Collabtive.
Just download it from our webpage, unpack the archive and follow the directions given in install-readme-en.txt