I’ve tried a completely clean install of 2.9 twice and I am getting the same result. When I submit an entry that is new or being edited the control panel will return a string of text instead of the success page. Sometimes you can hit back and get in to the CP and sometimes you get locked out. Any ideas?
For instance I get this message - {"message_success":"Entry Has Been Updated"}
Sometimes when I try and navigate to edit all entries I get -
{"rows":[{"entry_id":"20","title":"<a >Test<\/a>","status":"<span class=\"status_open\">Open<\ span>","entry_date":"9\/4\/14 4:56 PM","screen_name":"<a >Admin<\/a>","view":"---","channel_name":"Blog","_check":"<input type=\"checkbox\" name=\"toggle[]\" value=\"20\" class=\"toggle\" id=\"delete_box_20\" \/>"},{"entry_id":"19","title":"<a >Test<\/a>","status":"<span class=\"status_open\">Open<\/span>","entry_date":"9\/4\/14 4:51 PM","screen_name":"<a >Admin<\/a>","view":"---","channel_name":"About Us","_check":"<input type=\"checkbox\" name=\"toggle[]\" value=\"19\" class=\"toggle\" id=\"delete_box_19\" \/>"}],“pagination”:”“}