Page builder not working

Hello!

Can anyone help me with my problem, which is that PageBuilder never worked for me.
It opens OK but when I select page for editing it just stays there saying Loading.., but nothing ever realy loads.
All other (Member menu builder, Fields builder, Menu builder) works OK.
Attached is picture from Crome develop. tools that might be helpful:

I hope someone can direct me what might couse this problem.
I've checked folder permissions etc. everything lookss fine; I've tryed diffrent browsers, different OS but nothing things to matter.

Kind regards
Mayki

And it is me again!!

EUREKA, I've found out what was the problem.
Although I have never changed a file:

 /administration/templates/base/pbuilder_content.html

I've found wrong code inside that file.

Orig code:

<script language="javascript" type="text/javascript">
<!--
$(document).ready(function(){
oPB = new BxDolPageBuilder({
parser: '__parser_url__',
page: '__page_name__',
minCols: 1,
maxCols: 4,
pageWidthMin: __page_width_min__,      //missing:  '
pageWidthMax: __page_width_max__,     //missing:  ' 
pageWidth: '__page_width__',
otherPagesWidth: '__main_width__'

repaired code:

<script language="javascript" type="text/javascript">
<!--
$(document).ready(function(){
oPB = new BxDolPageBuilder({
parser: '__parser_url__',
page: '__page_name__',
minCols: 1,
maxCols: 4,
pageWidthMin: '__page_width_min__',
pageWidthMax: '__page_width_max__',
pageWidth: '__page_width__',
otherPagesWidth: '__main_width__'

Now pagebuilder loads as you can see in attached file.

I must say big thanks to: http://support.dialme.com  !!

I hope this will help to other members with Page builder problem.