multicolumn in seprate answer sheet (Feature #73)

red sea wrote:

i hope you put the answers in multicolumn (separate answer sheet model) .
now, the answers in one column (30 answers), then the model opening new answers page.

regards

The following works for me
inside the product environment

\begin{examcopy}[2]
\coverpage
\shufflegroup{general}
\insertgroup{general}
\AMClabel{lastpage}
\AMCcleardoublepage    
\AMCformBegin
\answerFormHead
\begin{multicols}{2}
\AMCform
\end{multicols}
\AMCcleardoublepage
\end{examcopy}

in particular the \begin{multicolumns}{2} does the trick.
See attachment for the result (of the answer page only).

The trick from Pieter Van den Hombergh seems to work for your separate.tex: add

\usepackage{multicol}

\begin{multicols}{2}
\AMCform
\end{multicols}

This works for the first source file you posted, so the problem is in the second one: you used there the \element command inside a longtable environment, which is not a right way to write things. The \element command don't write anything, but inserts some commands into a list. If you call it inside an environment, its action will be local, so that the \insertgroup called outside this environment won't be aware of all you did inside it with \element...