No access to workspace after applying .500 patch

After applying .500 patch on Hyperion. Following error was encountered

"An error occurred processing the result from the server

URI: http://server/workspace/modules/com/hyperion/bpm/web/desktop/Adf.jsp

Description: An invalid content type 'text / plain' was found INSTEAD of [text | Application] / xml '. "

I am not very sure why this error came up. It had something to do with EPMA deployment part. 

I tried many things but finally it had everything to do with EPMA, OHS, Foundation

 1. Configure OHS

 2. Redeploy Foundation, EPMA

 3. Clear the cache and tmp from all managed servers

                                                  

                              Go to EPM_INSTANCE\domains\<domainname>\servers\<managedservers>

Delete tmp and cache from each folder

4. Restart ALL the services

5. Clear browswer cookies, cache.

Now login to the workspace and it enables login now.