This new plugin however is not free and need to pay for it before you can make the free plugin work.
Hardly a free plugin.
This is a very deceptive practice and I sincerely hope this does not become a common practice as it simply clutters up the back-end unnecessarily installed objects.
Core Design Magic Tabs plugin is absolute free extension the same way as the second one - Core Design Scriptegrator plugin. You don't need to pay anything.
Second, from an administation point of view, there is basically no reporting so you would have to write a lot of code for that.
That being said, the programmer was really onto something here. What is done is elegant, simple and it works fine. I would say it is about half way there to being a prefered shopping cart and I would have happily paid for this as it leverages the core of joomla which gives you the flexibility of using a great many addons.
lastly (and this is important !!!!), if you do install it on your site, beware when you go to uninstall. When I uninstalled the component it brought my site to the ground. For about 20 seconds I was horrified untill I gathered myself and reinstalled the software. What I noticed was it does not uninstall the plugins or modules so when you uninstall the component it still makes calls to includes that no longer exist. You need to unistall the plugins and modules first then you can safely uninstall the component.
Bottom line is this. I ran a software company for a number of years and this guy has talent. But this is a project that simply was not finished.
For bringing your site to the ground... It seems to me that when you install a package using a component + plugins + modules and you remove the core component (first) the other parts will somehow complain. That is not so much a problem of SimpleCaddy as well as knowing what you uninstall.
Customer management is what makes components like this heavy and cumbersome for most people. SimpleCaddy does not have this, although code is commented in the source as to how to use Joomla user information as well as CB information. As for reporting, yes, there is very little. However, since the creation of the project I have had only a handful requests for more than is currently in the program. Any reporting is fairly easily addable.
On the other hand, I haven't seen you, or at least your login here, in the forum asking for any advice or extra functionality, am I wrong? I would have thought that the forum would have been your first stop before posting here.
Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 2304 bytes) in /home3/domain/public_html/plugins/content/jsmallfib.php on line 3107
I can usually work through issues like this but there is no forum, minimal documentation and no obvious way to contact the developer.
It's free so you take your chances, programming was obviously well thought out and this is a needed access control for Joomla.
With literally no support, this plugin is a bad idea for a production site.
People normally get support from the 'Contact' link on the website. Please do that, I'm sure we'll get your problem fixed. However you are very right about the lack of documentation, so now there's a completely new WIKI - see link above on Documentation - which includes full installation instructions and a tutorial with all available functionality.