Follow up to follow up and FIX.

The developers/vendors of some programs/drivers did not use the Beta period to update their drivers for Apples El Captain 10.11.
One is ReplicatorG, used for 3D printing.
Here's how I fixed it.... I partitioned my HD and had Apple re-install Yosemite 10.5 on the new partition. The Apple Store in Jacksonville, FL was nice enough to do it for free.
Now when I boot to the new partition I can run my programs with no problems. All is well once again.