If nothing else helps and nobody answers, the solution is to look at the source code and see if there is any hint in the comments.
The error message you quoted corresponds to the constant MAXVDOTF.
This is only used in one place: in the file min_fire.cpp:
// stopping criterion while stuck in a local bassin of the PES
if (max_vdotf_negatif > 0 && vdotf_negatif > max_vdotf_negatif)
I suggest you take it from there and check out the code leading up to this and possible compile time constants or options to min_modify if there are ways to avoid this, or whether this is rather an acceptable result for the kind of system you have.