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I tried to compile the following document but got an error.


\sisetup{output-decimal-marker = {,}}

%\usepackage[a5paper, top=2in, bottom=1.5in, left=1in, right=1in]{geometry}
\changefontsizes{10.0pt}  % Change base font size


\fancyhf{} % clear all fields


! LaTeX Error: Command \iint already defined.
               Or name \end... illegal, see p.192 of the manual.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.

l.505 ...d{\iint}{\DOTSI\protect\MultiIntegral{2}}


I'm I doing something wrong?

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up vote 5 down vote accepted

Load the package wasysym after the amspackages ( amsthm in your case)

share|improve this answer
more likely amssymb for \iint. – barbara beeton Jun 5 '14 at 18:17
sure, but it is easier to remember "after ams packages" – Herbert Jun 5 '14 at 18:51

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