There is a new version of OpenMEEG that is in the process of being released.
Maybe you could try with these test packages:
http://openmeeg.gforge.inria.fr/download/?C=M;O=D
Download the 2.4 package for you operating system, then in Brainstorm select the menu Update > Update OpenMEEG > Install.
Are you running Brainstorm from Matlab or are you using the compiled version?