issue with amsmath

[Ronald Phlypo]

Dear developers,

there seems to be an issue when both using the amsmath and the pdfcomment package in the same document. The first three errors are

(1) ! Illegal unit of measure (pt inserted).<to be read again>.. (2) ! Package calc Error: `m' invalid at this point.See the calc package documentation for explanation.Type H <return> for immediate help.... (3) ! Incompatible glue units.<recently read> \calc@B ...

If I either do not use amsmath, or pdfcomment, these errors disappear (the reference line for the errors is the same line, i.e., an equation)

I think this is a major issue, based on the popularity of amsmath as a package!

Thanks in advance

[Josef Kleber]

Hi,

can you please provide a minimal example. In general, it is often difficult to find an example that demonstrate the problem.

Thank you,

Josef

[Ronald Phlypo]

Sure Josef, here you go:

%%% cut here %%% \documentclass{article}

\usepackage{amsmath} \usepackage{pdfcomment}

% Identity matrix / Identity operator \newcommand{\Id}[1]{\ensuremath{\boldsymbol{I}{{0mu} #1\times #1\endgroup}}}}

\begin{document}

The identity matrix in $F^n$ will be denoted by $\Id{n}$.

\end{document} %%% cut here %%%

[Josef Kleber]

Hi Ronald,

it's not really a issue with pdfcomment, as the following example shows:

\documentclass{article}
\usepackage{amsmath} 
%\usepackage{calc}
% Identity matrix / Identity operator 
\newcommand{\Id}[1]{\ensuremath{\boldsymbol{I}{{\begingroup\setlength{\medmuskip}{0.1 mu} #1\times #1\endgroup}}}}
\begin{document}
The identity matrix in $F^n$ will be denoted by $\Id{n}$.
\end{document}

pdfcomment is a vivtim of a drive-by-shooting! ;-)

pdfcomment needs to load calc for calculations. You should contact the maintainers of calc and/or amsmath.

Nothing i can do from pdfcomment,

Josef

[Josef Kleber]

Problem is an incompatibility of calc and amsmath

[Ronald Phlypo]

Josef,

Alright, thanks much!

Best, Ronald