# “Package xkeyval Error: value no' is not allowed.” while working baposter

I faced the same problem as the author of an older question - I got following message in my log:

! Package xkeyval Error: value no' is not allowed.

See the xkeyval package documentation for explanation.
Type  H <return>  for immediate help.
...

l.134   }


The linked question's answer suggested few options, which I (as a complete LaTeX beginner) didn't understand completely:

To fix this either try to add a margin= option to the geometry package to overwrite the global one or to rename the margin option of the class to something else.

Another alternative is to delete the global options, i.e. put the following after the \documentclass. The < > part marks a place which should be filled out, not taken verbatim.

\makeatletter
\def\@classoptionslist{<class options except margin OR empty>}
\makeatother


I tried to add "margin" with some value to the Geometry parameters in baposter.cls, and I tried to add the code in the bottom of the answer citation just after \documentclass in my .tex file (with < > part empty), but no joy here. I didn't found any "global margin option" declared in baposter, though "basemargin" is called many times, so it should be somewhere in the class. How to find it and check any problem that might be there?

What did I misunderstand? And what's more important: what should I do to make baposter work?

In the comments of baposter.cls I found:
%% 15. September 2011:

Probably you have to replace no by false.