Can you find something interesting in the log file produced running AMC in debugging mode?

There is a waring
WARNING: PDF corrected file not found: /Users/simone/ASSISTENZA/Exams/NumericalAnalysis-2014-07/NumericalAnalysis-2014-07//DOC-corrected.pdf

I also joine an anonimized log file

Can you remove all annotated PDFs before building the log file?

Here it is:
just exporting, debug active after removing everything in the pdf directory

dyld: lazy symbol binding failed: Symbol not found: __ZN2cv6imreadERKSsi
Referenced from: /opt/local/lib/AMC/exec/AMC-buildpdf
Expected in: /opt/local/lib/libopencv_highgui.2.4.dylib

It seems that there is a problem when AMC-buildpdf is trying to use OpenCV.
Do you have these messages when running /opt/local/lib/AMC/exec/AMC-buildpdf (with no arguments) from the command-line?
Can you try to recompile AMC binaries (build again the port) and look for strange messages in the log?

I could not see the compilation output with port.
However I made this discovery:

The problem arises with

auto-multiple-choice-devel @1.2.1.1464 (x11, tex, education)
Auto Multiple Choice - Multiple Choice Papers Management

Version

auto-multiple-choice @1.2.1_1 (x11, tex, education)
Auto Multiple Choice - Multiple Choice Papers Management

However, if I install auto-multiple-choice-devel @1.2.1.1464 version first and uninstall it just after (without cleaning up the leaves),
then install auto-multiple-choice @1.2.1_1, the problem is not appearing.

1. auto-multiple-choice-devel has been broken between svn:1403 and svn:1463
2. the dependencies of -multiple-choice @1.2.1_1 needs to be aligned with those of auto-multiple-choice-devel

My fixed instructions for installing multiple choice on MacoSX using port 2.3.1:

sudo port install auto-multiple-choice-devel
sudo port uninstall auto-multiple-choice-devel
sudo port install auto-multiple-choice