Or I am completely retarded or I am in need of some sleep, because I am unable to install the plugin ???

* In the installers menu there is no plugin install section (tried the other installer options just to be sure  :-[)
* JCE Admin, JCE Plugin Manager, Install gives me this error:
Installation file not found:
/home/vhosts/<domainname.ext>/httpdocs/media/install_4660c34d56d9f/ (replaced real domain name in this post, with domainname.ext!)

What am I missing? ??? :-[

hello there!

The "Simple Image Gallery Plugin" is nothing else but a mambot!
You must go to section of joomla "insallers->mambots" to install it!

I needed some good night sleep, had been working on a site for 24 hours straight.  :-\
I can tell you that ain't good :P

The plugin is indeed a mambot and it installed succesfully  :-[