Need assistance with ES error after upgrade from 5.2.2 to 5.3

I did upgraded my SPLUNK ES v5.2.2 to 5.3. none of the configure options are not working. Options like ES permissions and Identity management and Identity lookup's etc.. I did the backup before the upgrade and after, I found the problem in ES 5.3. So, that I kept all my old file back i.e, 5.2.2 and working fine. Could anyone help with why none of the options under configure drop down are not working and throwing an 404 error and [object OBJECT] error even though I have all ESS_ADMIN rights and full permissions to whole SPLUNK directory. Thanks in Advance and any help would be appreciated.