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Lyx 2.1 RC1, warning message "the selected document class Article" requires external files

I just installed 2.1 RC1 bundle on windows 7

Each time I try to save a document (also when I first open Lyx), I get this message

enter image description here

LyX-210RC1-Bundle-1.exe

why this happens? Do I need to configure something else? I had Lyx 2.0 before, but I uninstalled that before installing Lyx 2.1

Solution

  • I also got this message. For me, this is what I think was going on:

    The first execution of Lyx very quietly (i.e., in the background) performs package updates for MiKTeX. Afterwards, it actually launches Lyx.

    However, if you launch a second invocation of Lyx immediately after the first (since nothing has yet displayed), it will launch w/o the packages it requires and result in the message that you see.

    I suppose if MiKTeX was not / improperly installed, you could also encounter this issue.