[ayoshak]

I installed standard Calibre on my PC (XP updated) and formed the library on a large external USB harddisk. I processed a large amount of books making my own custom metadata (Titles, Authors, Tags and Series) designed to be useable on my new KOBO. All is well when I use that version of Calibre.

I than decided it would be more useful if I use portable Calibre instead the one installed on my tower PC. So I installed a portable version onto the same external USB harddisk. It works on its own but it will not read from the library made by the previous standard Calibre. It declares it corrupt and it is unable to fix it. The same library is fully useable using the standard Calibre.

If I try to transfer individual books between "standard" library and a new "portable" one (using Add book function) none of the metadata are being transferred correctly.

Obviously the Calibre developers decided to use two mutually incompatible database formats for those two versions of Calibre.

Is there an easy way of transferring the standard version into portable version?

Thanks
Ayosha