Getting a Json/application file in the back office

Thursday 07 May 2009 2:29:39 am

hello,
I'm getting an error in my back office, everything worked well...but yesterday everytime i click to a link in my back office, the Browser try to download a json/application file, so i can't use anymore my back office, i've tried to disable the Treemenu but the problem still persist.

The problem seems to happen much often on IE than Firefox, and doesn't happen anytime

Any help will be useful.
Thank's

The content of the file is :

{"error_code":0,"node_id":5,"children_count":6,"children":[{"node_id":12,"object_id":11,"class_id":3,"has_children":0,"name":"Members","url":"\/Users\/Members","modified_subnode":1231943492,"languages":["fre-FR"],"is_hidden":0,"is_invisible":0},{"node_id":13,"object_id":12,"class_id":3,"has_children":0,"name":"Administrator users","url":"\/Users\/Administrator-users","modified_subnode":1239286819,"languages":["fre-FR"],"is_hidden":0,"is_invisible":0},{"node_id":14,"object_id":13,"class_id":3,"has_children":1,"name":"Editors","url":"\/Users\/Editors","modified_subnode":1241534269,"languages":["fre-FR"],"is_hidden":0,"is_invisible":0},{"node_id":319,"object_id":341,"class_id":3,"has_children":0,"name":"Ingedata","url":"\/Users\/Ingedata","modified_subnode":1232534304,"languages":["fre-FR"],"is_hidden":0,"is_invisible":0},{"node_id":44,"object_id":42,"class_id":3,"has_children":0,"name":"Anonymous Users","url":"\/Users\/Anonymous-Users","modified_subnode":1081860719,"languages":["fre-FR"],"is_hidden":0,"is_invisible":0},{"node_id":86,"object_id":84,"class_id":3,"has_children":0,"name":"Partners","url":"\/Users\/Partners","modified_subnode":1225188220,"languages":["fre-FR"],"is_hidden":0,"is_invisible":0}]}