PrE15 Failure with saved project using disc menus

I’m having an unusual problem with saved project using disc menus.  I have a large project with scene markers but without any movie menus.  It saves and opens correctly.  I can add a menu, burn discs, and save the project.  However when I open the project again (now with menus) PrE 15 fails.

The failure message is from Windows,

WeFault.exe – No Disk “There is no disk in the drive.  Please insert a disk into drive F:

Cancel/Try Again/Continue

Both Cancel and Continue responses result in PrE  terminating with Windows message “Adobe Premiere Elements 15 has stopped working”

The crazy thing is that I don’t have an F: drive and, per windows, drives F, G, H, and I are “USB drives”.  I do use an external US flash drive, however it shows up as drive L.  I also have an external USB hard drive that shows up as drive K. 

This happens repeatedly.  Does anyone have an explanation or workaround?

After losing my project the first time, I recreated it and saved it twice, once with menus, and once without.  The version without menus works fine, and I can add menus and burn discs to it.  But, the saved version with menus causes PrE to terminate.

Some details:

Video is hi-def, 1920x1080, of consisting of a dozen MP4 files. 1 hr 45 minutes in length

Menu is vanilla  “Pan and Zoom” in the “Slideshow” category, without any modification, (i.e., no video, photo, or audio background)

18 Scene markers

Blu-ray disc

Environment:    Windows 10 Pro 64 bit

Fast Computer: Intel Core i7-6700, 3.4GHz

Large memory: 32GB

Large disk storage – 2 TB 😧 drive for programs and data, plus 256BM C: flash drive for Windows