I still don't really know anything about
Core Design Scriptegator except for what I've read on the
JED
and the reviews I've read don't inspire me with a lot of confidence in this product. The only thing that I can be certain about is that
Kunena does not require this plugin and, from the sounds of it,
Core Design Scriptegator loads some Javascript libraries that conflict with Joomla's Mootools library.
Therefore, the logical solution in this case is for you to tell the author of
Core Design Scriptegator about your problem - that it conflicts with other products that you are using - and ask for suggestions about what you can do in order to use all of the products that you want to use. I would refer to the following article when you make that suggestion:
MooTools and Kunena 1.6
You need to do a few things to solve your problem. You need to decide just how important
Core Design Scriptegator is to your website and overcome why it's causing other things (like your custom forms, your site login, your forum, etc.) to fail. To help you, you need to contact the author of
Core Design Scriptegator and let him/her know that their Javascript libraries are incompatible with Joomla. We may or may not be able to help you further (it depends on your understanding of where to look for Javascript libraries loaded on your site) but that's what Matias was trying to tell you earlier in this discussion. We certainly cannot help you with a
specific solution if we do not know anything about your website but, in conclusion,
Kunena does not need
Core Design Scriptegator and, if you really "must" use
Core Design Scriptegator, you may have to make a difficult decision about what is more important to you.