Hello @Moon,
This is the older blue “FxSound Enhancer” version, right?
Sorry to inform you there is no more support for the older versions.
You should know, though, that when I attempted to install this old version, I got a ton of errors similar to yours.
It appears that when you’ve installed the new version, then uninstall it and re-install the old version, you get nothing but trouble.
What I would recommend you to do is to uninstall both versions with a specialized complete de-installation program, then re-install the old version.
This seems to be the only way to enjoy an old version of the program after installing the new version.
Really sorry for the trouble; hope this helps!
doolhoofd