I know I messed up but I don't know where along the line 
I can't help with Visustella scripts, since they are closed code and all. Most of plugins that don't belong to their suite are incompatible with a project with any of their plugins, as far as I know (rpg maker web forums is flooded in people answering that). As for running it without other plugins, did you add ME_CopyActors somewhere above it, or ran it on its own? (It's an extension for CopyActors, it won't work if it's not there).
Also, could you show me the trace error log of running it without Visustella suite? And just in case, the corescript version (Game > Update Corescript)?
I updated this plugin's version for the time being, which besides an option to add as you create it, includes a couple of bugs that could potentially crash your testplay.
Didn't see the crash you reported, I'll keep looking for it, but it would help a lot if you sent me a log report, like the one you sent with VisuStella plugins on.
Since we didn't get to a specific solution, I begun to make the simplifier plugin. I'd say I'm nearly 80% done. It would let you run the commands from the other two (and other related if I make them), without having to manage the data manually, other than the actorId you want to create or delete.