I had rundom problems with SW 2015 Sp1 my support-team said i should re-install.
After fighting and finally a sucsessfull deinstallation i wanted to start donwload SW 2015 Sp1 again.
But no download could be found. At time i can't work cause there is no SW 2015 avaiable - going back to SW 2014 will result in not being able to open my actual project (cause i worked in SW 2015 with it).
So guys - hurry up and give us SW 2015 SP1.1