This is zap's ideea posted on beta forum , i just thought i would explain it a lil bit clearer for those who did not understood it.
This is only for those of you who have ko installed on a diferent hdd partition then the one in wich your operating system works , like i do.
So lets say you have 3 partitions labeled C,D,E.You have the old ko installed on lets say d:gamesknightonline , and the patch automatically tries to find it on your C partition , thus you get an error at the end of the "you dont have ko installed " type.Here's what you do:
First you open notepad ....start bottom left then click notepad.There you type the following / copy paste if you are lazy :
Windows Registry Editor Version 5.00
"CompanyName"="Copyright 2002 NoahSystem And MGame"
The line that starts with path has to be modified according to the location where you have old ko installed
in my example it is on D:gamesknightonline thus the command is "PATH"="d:\games\KnightOnline"
After you wrote everything close the notepad it will ask you to save , press yes.
At the bottom you have a file name option with the name of the file *.txt
modify from *.txt to v1264.reg then press save . You now made a reg file.Doubleclick the file you made , wich you should find in your documents , under the name v1264 , and press yes when it will ask to add it to registry.
Now you can install the patch on the desired path.