#3 - Sept. 9, 2011, 1:01 a.m.
Beat me to it Ismalia! Great work.
Halbgott, please try stopping these programs in your Task Manager or Processes:
DiabloIII.exe
Launcher.exe
Agent.exe
If stopping all of those does not work, let me know.
Also, Agent.exe will not close if you crash, so that might be why you are having issues. If you can, try to always close Diablo III normally so you don't have Agent.exe still running thinking you crashed.