Can you please post a screenshot of the Patcher.exe after you started it?
What you can do as well is to check the properties of Patcher.exe (right mouse click and look at the properties), then in the Window which appears check "details".
The Patcher.exe has to be Version 2.0.0.0.
The process is like this:
When you start the patcher.exe it checks if a new updated patcher.exe is available (this is independent from the game patch).
If this is the case the patcher.exe downloads the updated patcher and then starts the patcherpatch.exe.
If no new patcher.exe is available the patcherpatch.exe is not run. But the patcherpatch.exe is the tool which generates that Korean error.
Which means for any reason your patcher.exe "thinks" it's outdated and tries to download the patcher.exe and starts the patcherpatch.exe.
The patcherpatch.exe gives an error because no update has been downloaded.
That is kinda a weird issue.