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frabjous,

thank you very much, deleting the .aux files helped Thanks for the help, and have a nice day

Hi.
Here is the error message I get:
! Missing \endcsname inserted.
<to be read again>
\OT1\ae
l.10 \newlabel{lin\IeC {\ae }rlinje}{{1}{1}}


If i posted this in the wrong forum, i am sorry.
I have googled the error-message, but the only solution I get is to remove eventual "\" signs that don't ...