There is some stuff I remember when the AU3 plugin first came out and people were complaining that it wasn't working or wasn't showing up, I can't remember now, you can read the earlier posts of this thread for those posts if you're interested, but here is something to try, from vague memory....
Go into the Plugin Manager and make sure the plugin is there and that the AU3 mode checkbox is unchecked like mine:
Not intuitive to uncheck it, I know, but that is what works. I'm not sure what that checkbox does.
Seems like there was something else people were doing to get it working, but I honestly can't remember now. I had a slight blip with it when I first tried it too, but once I did whatever I did it has not stopped working since several LogicPro updates since then.
what version of LogicPro are you using by the way? And what version of VePro?
@LeeThompson, you can post an empty LogicPro project you are trying to use with this problem, this could be something about how you are trying to use it also.