# TeXlipse Hyperref generates "Key http://link is undefined" warnings? [closed]

When using the hyperref package, I keep getting this warning that says something like:

Key ftp://ftp.ams.org/pub/tex/doc/amsmath/short-math-guide.pdf is undefined


whenever I include an http link.

For example:

\documentclass{article}

\begin{document}

Here is a link to \href{ftp://ftp.ams.org/pub/tex/doc/amsmath/short-math-guide.pdf}{The Short
Math Guide}

\end{document}


I'm using pdflatex.exe to generate the output, and v6.82h of hyperref.sty.

• Your example document works fine for me. Is that the full error message you get? What version of hyperref are you using?
– Jake
Aug 25 '11 at 0:49
• I am using the MikTeX distribution, with TeXlipse as a front end Aug 25 '11 at 0:49
• Your example works fine. But I can get an error ! Package keyval Error: ftp://ftp.ams.org/pub/tex/doc/amsmath/short-math-guide.pdf undefined.  if I use angle brackets \href[..]{...} instead of correct braces: \href{..}{...}. So my guess is you didn't check your example but only believe that it demonstrates your real problem. Aug 25 '11 at 6:51
• So sad this is closed, as the problem (I think from TeXlipse) persists. I use Eclipse 3.7.2 with current stable TeXlipse and latest MikTeX 2.9 under Windows. I also got those warnings. They can be eliminated (workaround) by adding \label{THE_UNDEFINED_LABEL} BEHIND \end{document} for each problem. May 21 '12 at 7:11
• @BastianEbeling yes, the workaround wasn't working, but finally it worked, I think it was some problem with some blank space, I´m not sure cause I couldn't replicate the problem. It´s a shame that this problem still occurs on textlipse but at least your workaround solve it. Thanks Jul 17 '18 at 1:02