Invalid backend configuration

2.x module requires elFinder 2.0 version. It is not compatible with elFinder 1.x.

For 1.2 use 0.7 or 1.0 dev module instead.

Same error with :

module

; Information added by drupal.org packaging script on 2012-06-08
version = "6.x-1.x-dev"
core = "6.x"
project = "elfinder"
datestamp = "1339114272"

library:

* elFinder (1.2):
- jQuery and UI updated
- Python connector improvements
.....

does 6.x-1.x-dev works only with elfinder 1.1 ?

Reopening...

Using 6.x-2.x-dev (26 Oct 2012) and latest http://sourceforge.net/projects/drupal-elfinder/files/Library/elfinder-l....

Removed the files it was complaining about in sites/all/libraries/elfinder.

Configured CKEditor to use elFinder as the image browser.

The moment I click the image upload icon the large elFinder window pops up with all the menu buttons at the top greyed-out.
On top of the large window I instantly get a smaller error window:

Invalid backend response.
Data is empty.

This is using the same custom file directory path as used for 6.x-1.x-dev which worked fine with elfinder lib 1.2

Try to use Jan 14+ build

Adding version numbers..