[TheArtfulDodger]

Hello:

My library is on the same 16GB Flash drive with the program. Here's the setup:

Y:\Calibre Portable
Y:\Calibre Portable\Calibre - Location of Calibre.
Y:\Calibre Portable\Calibre Library - Where Calibre put its library.
Y:\Calibre Portable\Calibre Settings - Created by Calibre.
Y:\Calibre Portable\My Libraries - Where I have each of my 7 libraries.
Y:\Calibre Portable\My Libraries\My library 1.
.
.
.
Y:\Calibre Portable\My Libraries\My library 7.

And, I told the program that was the location of my libraries during a previous installation and everything worked perfectly! However, when I installed an update, it did not know about my 7 libraries.

So, I am not sure what's going on. However, everything you said about using a flash drive to carry portable Calibre and my libraries around so the organization of each library would always be the same!

Thanks in advance.

Sparky