Older versions of Libronix
I have a great deal of money invested in my Older Libronix Digital Library System. I would very much like to finish out the MaCarthur New Testament Commentary Series in a format that I can add to my existing library (LDLS) I'm told I can't do this, I have to throw about 400.00 in resources away and start all over again. That is ridiculous. Why can't I purchase what I need and add them to my current library

The Libronix Digital Library System is no longer supported by Faithlife. However, all the resources that you owned in LDLS can be read and searched in the latest version of Logos 6; there is no need to throw them away and start all over again.
You can complete the MacArthur NT Commentary Series by purchasing this collection: https://www.logos.com/product/121460/the-macarthur-new-testament-commentary-series