I just installed LinearMouse. It doesn't support the extra buttons on my Logitech MX Vertical mouse, but SteerMouse does. That by itself is worth the license cost for me.
Hello, I'm the author of LinearMouse. It seems that you have both LinearMouse and SteerMouse installed simultaneously. As they have similar functionalities, if one of them captures and processes the side button event, the other may not receive it.
