HANA One Management Console - Addons - logout

Question

Hello,
when I select "Addons" in the HANA One Management Console, I get logged out instantly. I tried clearing cache/cookies as well as switching browsers (Chrome, Firefox, IE10).
Since it's probably hard to answer the question with this information, I tried to debug a little bit:
Problem seems to be that there are some AJAX requests (/hanaonewebadmin/UpdateManager/getPackageList/installpackage/wait, /hanaonewebadmin/UpdateManager/getPackageList/newpackage, /hanaonewebadmin/UpdateManager/getPackageList/installpackage/scheduledwi) are sent to the server and return
  "resource": "sessionFilter",
  "response": 221
This respone, on the other hand, leads to:
} else if ((installingerrorpackageList.response == '221') || (...) {
     window.location = 'login.html';
So what is this sessionFilter and why is it returning 221?
Any hints appreciated,
Fabian

Answer 1

Many thanks to Mandar Khadilkar!
Today he was able to solve the problem.
The issue was that /root permissions were changed. I don't know why cause I did not change anything here (at least not on purpose).
This thread here seemed to have the same problem: https://scn.sap.com/message/15558136
Mandar was able to restore the permissions and will investigate further and maybe fix this in a next release, although the root cause is still unknown.