You have to put all files provided in my x86 folder in Lotro's root directory (e.g. "C:\Program Files\Lord of the Rings Online") and all files provided in my x64 folder in Lotro's x64 directory ( "C:\Program Files\Lord of the Rings Online\x64").
All files provided in my x86 directory have to be in the same folder "lotroclient.exe" can be found in, all files provided in my x64 directory are meant to be used with "lotroclient64.exe" and should thus be put in the same directory this .exe is found in. You've provided both the x86 and the x64 client with the x64 files, if I understand you correctly, probably why the game keeps on complaining for you.