[pzaw]

hi,

I Intalled calibre portable (Win) ver3.28.0 on my thumb drive recently.
I have no device since I use calibre to read/browse the books on various computers and tablets.

Calibre installed on the thumb drive under

root\calibre portable\calibre

Calibre settings installed under

root\calibre portable\calibre settings

Calibre library installed under

\calibre portable\calibre library

I created my own libraries (through calibre) under

root\calibre portable\Math_ebooks
root\calibre portable\Math_Notes
root\calibre portable\Electronics_ebooks
root\calibre portable\Physics_ebooks
root\calibre portable\Electronics_Notes
root\calibre portable\Physics_Notes

During setting/sorting my books into various libraries, I noticed that some of these Libraries stopped showing up on my drop down list shown in the attachment shown in red boxes. In the attachment the Electronics_ebooks library is missing!

I did try reinstalled the Electronics_ebooks library but then I find some other library goes missing! Then I tried reinstalling the missing library but some other library goes missing!...

I also noticed that the drop down arrow (Green circle) which is normally present in the menu for libraries is now missing.

My query is:-
1. Is there a limit on the number of libraries you can create? It looks to me
like that limit is ~6.
2. Is this by design?
3. If this is a corruption/bug of some sort can I just delete the
Calibre Settings directory and run Calibre-portable.exe?
4. Or should I just delete Calibre folders
root\calibre portable\calibre
root\calibre portable\calibre settings
and reinstall Calibre Portable (Win) V3.28.0?

Please Help
pzaw