I want to change the library loaded at start up. If I add in shortcut parameters>Advanced>commanline parameters >>--with-library="D:\Users\ME\Documents\Eigene eBooks\Calibre Bibliothek<< nothing happens.

>>"L:\Apps\Calibre\App\Calibre\Calibre\calibre.exe" --with-library="D:\Users\ME\Documents\Eigene eBooks\Calibre Bibliothek"<< as executed as batch works.

I'll check that soon. I let you know