So, I was able to get the custom blueprint maker working again. This tool was created by velocitygrass over at ModTheSims. The blueprint feature is included in the game as created by EA, but is unknown to most players. It allows the user to "place" a blueprint of a complete room on their lot, including everything; walls, doors, windows, wall coverings, floors, furniture and decorations. The tool created by velocitygrass allows a user to clone their own rooms and include them in the catalog, as well as share them with other users.
I was playing a game with a nicely established property including a fishing hole and functioning barn. The house had become too small and so I built the 50s style ranch that became my most recent project.
Here's the thing. Once I had built it, I decided to make it a project and built it again on an empty lot for the purpose of this thread. After spending all the time to furnish and decorate it I went back to my active game and realized that I had a fairly Spartan home. But, with the exact footprint of the furnished home.
So I used the BP tool to clone each room and place them over the existing rooms on the active house. Presto, instant makeover! A couple adjustments for doors and windows that had been moved in the final build and I was ready to go.
Which brings me to an advantage of using the BP tool with my custom builds. If anyone ever wants to place one of my buildings on a lot they are already playing, just let me know and I will create blueprints for the entire building. It's actually a fairly simple process, and such a powerful tool.
If anyone is interested, I will create a short tutorial on using the blueprint tool. The game comes with quite a selection of BPs, including pools and resort structures. Just let me know.
I just wanted to put it out there.