Star War: Old Republic will not launch 'Only a single instance of this application can run' Suddenly will not launch - Solved

1.Open task manager and look for “launcher.exe”.  If it is in the process list, kill it.  Be sure it actually dies before moving on.
2.Open explorer and navigate to “C:\Program Files (x86)\Electronic Arts\BioWare\Star Wars – The Old Republic”.
3.Delete the “patch” folder.
4.Run “FixLauncher.exe”.
5.Run “launcher.exe”.
6.The launcher will update itself and then you should be able to login and play as normal

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