If enter the following in a unix shell in the cobra directory:

  find . -type f -regex '.*.m' | xargs grep convertIrrevFluxDistribution

you'll see at least two functions that'll probably act unexpectedly after this change:

./design/OptKnock.m:        optKnockSol.fluxes = convertIrrevFluxDistribution(optKnockSol.cont(1:length(matchRev)),matchRev);
./OMNI.m:            OMNISol.fluxes = convertIrrevFluxDistribution(OMNISol.cont(1:length(matchRev)),matchRev);