As above and in a Win 10 / samj 2.10.34 I have handy. I did copy the plugin from your post.
If it is not working, did you put the plugin straight into ...\Preferences\plug-ins ?
Did you perhaps put it in its own folder ? If so is the folder name the same as the plugin file name ?
Maybe in another folder ? Is that in your plugins path
...that is about all I can think of at the moment.
If it is not working, did you put the plugin straight into ...\Preferences\plug-ins ?
Did you perhaps put it in its own folder ? If so is the folder name the same as the plugin file name ?
Maybe in another folder ? Is that in your plugins path
...that is about all I can think of at the moment.