l.5 \theoremstyle
{plain}
If you say, e.g., `\def\a1{...}', then you must always
put `1' after `\a', since control sequence names are
made up of letters only. The macro here has not been
followed by the required stuff, so I'm ignoring it.
! Use of \let doesn't match its definition.
\set@display@protect ->\let \protect
\string
l.5 \theoremstyle
{plain}
If you say, e.g., `\def\a1{...}', then you must always
put `1' after `\a', since control sequence names are
made up of letters only. The macro here has not been
followed by the required stuff, so I'm ignoring it.
! Undefined control sequence.
\GenericError ...
#4 \errhelp \@err@ ...
l.5 \theoremstyle
{plain}
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.
И еще пакет ругается, что версия старая. Скачал новую; его нужно скопировать в "TEX macros directory". Это куда? У меня, вроде, Miktex 2.7 + TexnicCenter. Под Windows XP.