File Browser in frontend doesn`t show any files or folders

Hi all,

I`ve tried to add TinyMCE and Resource manager to frontend. I added Resourse Editor snippet, TinyMCE to it and then turn on Resource Browser feature in TinyMCE. But when I click on Resource browser button blank window opens. I`ve attached the screenshot. Also if I try to add any images or create folder my browser reports about javascript error in fckxml.js:
TypeError: this.DOMDocument is null
var xPathResult = this.DOMDocument.evaluate( xpath, this.DOMDocument - line 108
But as I understand this is consequence and not the cause.
When I use resource manage in site backend all works perfectly.
I`ve already tried so much solutions and really don`t know what to do now. Any suggestions would be appreciated. My last hope is community:).
MODx Evo 1.0.6

It was just internal restriction that didn't allow to use file browser in frontend. How much time I had wasted before got it.:)