sorry for spending your time, but i`m suppose that problem is not in MaxyGallery.
It was a problem of my hoster
The FCK editor is not working on that host.
I can`t upload any files - after uploading all of them is broken and don`t open (swf, doc, jpegs and other)
So i have change a hoster and after that all system is working good. And Maxigallery too.
Thanks for your help, and excuse me for my panic
It`s bad that Modx can`t default work with all hosts, but it`s true.