We had a problem in creating new application sets after upgrading from NW 7 to 7.5. So we decided to use report UJS_ACTIVATE_CONTENT to regenerate APPSHELL. After this report all appsets dissappear in administration login screen. In rsa1 I can see cubes, characteristics etc. but I could not start modifying them in administration screen.
Please see screenshot in http://i47.tinypic.com/15y86mh.jpg
Thanks in advance.