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    <div class="moz-cite-prefix">On 10/12/20 5:19 AM, Andreas Plihal
      wrote:<br>
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              <div style="margin:0 0 10px 0;"><b>Gesendet:</b> Samstag,
                10. Oktober 2020 um 18:55 Uhr<br>
                <b>Von:</b> "Andreas Plihal" <a class="moz-txt-link-rfc2396E" href="mailto:a.plihal@gmx.at"><a.plihal@gmx.at></a><br>
                <b>An:</b> <a class="moz-txt-link-abbreviated" href="mailto:bariserkus@hotmail.com">bariserkus@hotmail.com</a><br>
                <b>Betreff:</b> Re: Problems with LyX</div>
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                  <div>Dear Baris,</div>
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                  <div>I send you a MWE called "Farbrahmen" (=color
                    box): .lyx, .pdf, .log, .tex</div>
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                  <div>After converting I get errors "undefined control
                    sequence": .png</div>
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                    <p style="margin-top: 0.0px;margin-bottom:
                      0.0px;margin-left: 0.0px;margin-right:
                      0.0px;text-indent: 0.0px;">\ExplSyntaxOn</p>
                    <p style="margin-top: 0.0px;margin-bottom:
                      0.0px;margin-left: 0.0px;margin-right:
                      0.0px;text-indent: 0.0px;">\ExplSyntaxOff</p>
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                      0.0px;margin-left: 0.0px;margin-right:
                      0.0px;text-indent: 0.0px;"> </p>
                    <p style="margin-top: 0.0px;margin-bottom:
                      0.0px;margin-left: 0.0px;margin-right:
                      0.0px;text-indent: 0.0px;">Greetings</p>
                    <p style="margin-top: 0.0px;margin-bottom:
                      0.0px;margin-left: 0.0px;margin-right:
                      0.0px;text-indent: 0.0px;">Andreas</p>
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    Like the others, I have no issues compiling Farbrahmen.lyx (using
    pdflatex), other than harmless warnings that I do not have the
    mathpazo font installed and that there is an unused global option
    ("usenames") being specified. Both are probably left over from the
    original document. There is also a warning against using the
    fancyhdr package in conjunction with a KOMA-Script class.<br>
    <br>
    Is the error message shown from an attempt to compile this document
    or the original one? I ask because the error refers to an undefined
    LaTeX command (\ExplSyntaxOn) that does not appear in the .tex file
    that you attached (and that did not trigger problems when I compiled
    the document).<br>
    <br>
    Paul<br>
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