SAP released the new version of SUM SP 16 & remove all the old versions from Service Market Place.
New version will only run from Host Agent. You can’t run the same from http://localhost:4239 or DSgui.bat
Below are the commands to register with SAP host agent & URL to run in IE/Firefox.
root> cd SUM-directory
root> ./STARTUP confighostagent SID
Then enter the URL on your PC.
For Dual Stack
New UI is quite interesting where you can see the log files, Tasks as well as set the breakpoints. I personally not set the breakpoint yet but looks like it is a good feature.