Hi, thanks for the thanks

Your error appears because there are missing files in your sound effects inconsistency in synchronization, all directories must have the same folders/files.
Sound changes are located on SoundEffects only...so if you wanted to change a sound by your own, you must use the exact folders to work.
Every effects goes in his directory, you can read that on Info.
So, let's say you want to change a monster sound...you extract the "directory" of that sound (even if contains many others, you extract all and delete unnecessary folders/files after)...to config\CustomSounds\restoreDefault.
Why custom, because it's easy to find your own files and because other options already have many files added by me. Right now, custom folders are pretty empty.
Again for any skill effects, do the same as above and extract your skill directory into config\SkillEffects\Other Skills or config\OtherEffects.
The tool only replaces the files from RestoreDefault directory with your modifications from RemoveEffects/ZeroEffects and vice a versa.
This is why you must have the same folders & files like in RestoreDefault (it doesn't matter the content of any file...just the structure of the folders).
I should make an you-tube video...it is confusing's me also when explaining it...

)))