# Latex Quit: ! Undefined control sequence. l.62 \@writef [closed]

I was updating my tutor handouts for calculus and suddenly the whole thing refuses to compile. I have no idea what is wrong or why it is saying this. All I changed were some equations and I added a

\begin{aling}
text
\end{align}


This is line 62:

\let\originaleqref\eqref


I use it for refs, and it always worked until now.

\let\originaleqref\eqref \renewcommand{\eqref}{Eq.~\originaleqref}
\newcommand{\tref}[1]{Table (\ref{#1})}
\newcommand{\fref}[1]{Fig.
(\ref{#1})}


Please help me get this to work! I need to hand this out tomorrow.=/

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Welcome to TeX.sx! Please add a minimal (non-)working example (MWE) that illustrates your problem. It is considered a lot better to put in some code that will compile, as it makes it a lot easier for us to copy it into our text editor and work with it, and see exactly what it is you are trying to do. –  tohecz Nov 15 '12 at 19:52
I edited to mark your code, but did not change the aling to not change the meaning of the post. Is this a copy typo, or the same in your code? That would cause an error. –  Stefan Kottwitz Nov 15 '12 at 19:57

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