I found an solution for this prob. There was a "mutablebackup" folder under the mutable folder in windowsapp. I deleted all that was inside except "win32" ( somehow couldnt delete it, tried hard ) and then uninstalled again and re downloaded again. Now the error didnt occur and the launcher is open and im patching. Now I went to the mutable folder and clicked on every new data that came into the folder with "take ownership" ( with that one app ) and that seems to work.
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