Is this an old file you've opened up? As far as I know (and others could correct me on this) InBooklet, in particular, is long gone, but if an old file used it, it may still "ask for it". What I would try first is save your file as an IDML document, then reopen it and save it as a new document. Then try packaging again.
Caveat: watch for any layout changes when you do this.
Thank you for that information. It is an old file. Yes, I remember using IDML another time. I believe it did work.
But given that I needed to get it done asap, I just had to call Adobe support to have them help with the 3 external plugins that were keeping my file from packaging. After he went through the backend system files and deleting some specific ones. He ended up having me make a new document copy/paste into it and then it packaged just fine! I'll have to remember that for any old files that were prevously owned by another designer. THX so much for your response!
In addition to export out as an IDML which can result in layout issues, you can use one of the plugins that i created to remove such missing plugin data from the document. The plugin is free to use for 7 days, give it a try if you need to clean up lots of old files, just open them up and click a button all the open document would be cleaned up