if(!InitPatches(dim,level)) return kFALSE;
Int_t pt = GetPatchType(dim,level);
+ if(pt<0) return kFALSE;
Int_t nm = (Int_t)(dim/2.); //size of trigger patch in number of mini patches
Int_t stepm = (Int_t)(dim/2.); //step size through grid in mini patches
if(level==1 && fL1Slide) stepm = GetSlidingStepSizeMiniPatches(dim,level);