# CalculiX crashes for edited input file **URL:** \ **Category:** Model setup\ **Created:** [October 8, 2025, 8:30pm UTC](https://calculix.discourse.group/t/calculix-crashes-for-edited-input-file/2886 "2025-10-08T20:30:15Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![pl96andy](https://avatars.discourse-cdn.com/v4/letter/p/cdc98d/32.png) [@pl96andy](https://calculix.discourse.group/u/pl96andy)\ **Post date:** [October 8, 2025, 8:30pm UTC](https://calculix.discourse.group/t/calculix-crashes-for-edited-input-file/2886/1 "2025-10-08T20:30:15Z")
Hi all Sorry for noob question but i really have no idea what i am doing wrong i am trying to simulate orthotropic material in calculix. Because prepomax (and freecad) lacks support for orthotropic and \*DISTRIBUTING keyword seems to have drawbacks, i ended up with creation of my case in prepromax and editing it to obtain orthotropic material. Strangely if i run simulation on oryginal input file - its ok; if i make chatgpt make dummy example - its ok. But if i edit input file, calculix just crashes with no signifficant error Please help input file: > **[Dropbox](https://www.dropbox.com/scl/fi/1j88jnkg2vnjmtvg4ub6l/SAMPLE-v.inp?rlkey=1qciep46h6oxt0q2djgh49avw&st=3yeb31c8&dl=0)** ---
**Author:** ![Calc\_em](https://avatars.discourse-cdn.com/v4/letter/c/43a26b/32.png) [@Calc\_em](https://calculix.discourse.group/u/Calc_em)\ **Post date:** [October 8, 2025, 9:30pm UTC](https://calculix.discourse.group/t/calculix-crashes-for-edited-input-file/2886/2 "2025-10-08T21:30:12Z")
You have: > \*MATERIAL, NAME=ORTHO > \*ELASTIC, TYPE=ENGINEERING CONSTANTS > \*\*E1, E2, E3, NU12, NU13, NU23, G12, G13, G23 > 150000, 10000, 10000, 0.25, 0.25, 0.40, 5000, 5000, 3000 while the correct CalculiX syntax is: ![image](https://global.discourse-cdn.com/free1/uploads/calculix/original/2X/7/7b4a742c322881b0e7fdd70792b8243b38328598.png) So just move G\_23 to the second line.