Hi, When I run simulation with 0 iterations I receive segfault: ``` castor-recon -th 16 -df example_simulated_raw_data/simulation_phantom_belzunce_5e6.cdh -dout results/mlem -proj joseph -it 0:1 -oit -1 -dim 128,128,1 -vb 0 -opti MLEM castor-recon() -> Launch reconstruction from CASToR version 3.1.1. ----- Dynamic model: No parameters given - setting diagonal basis functions ! double free or corruption (out) Aborted (core dumped)''' If I launch ```strace''' on it I see messages like this: ```read(5, "# MLEM needs a strictly positive"..., 8191) ''' apparently, MLEM requires positive number of iterations. In any case, segfault is not good here.