Hi. Sorry all. It seems some changes recently caused buyaand sell to stop working for non 5E. I will be wokring on a fix soon. Keep in mind it is like 1% of my audience who uses these extensions non 5E. As for the comments about the MNM core window popping up. There ISa checkbox option to set sothat it only shows up when there is an update. If it is not workign for you please let me know, but please make sure you are aware of that feature.