@buddhi1980 The mesh export is broken right now, since the material is missing in marchingcubes.cpp line 301: sFractalIn fractIn(point, params->minN, params->N, params->common, -1, MISSING); I am not sure how to get this there can you have a look?
Ops! You are right. It crash. I will try to fix it and release as a patch for 2.13