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Hello, I am trying to run a topology optimization study on a model with non-linear geometry (large displacements). I am applying my loads by imposing a force via NLOAD1 Card Image. However, whenever I run the study, I receive the following error: ERROR # 4003: Abnormal termination in NLGEOM subcases. I have no idea what this error indicates, and I can not seem to find any other online resources to help me troubleshoot. The check screen output is shown below: Additionally, here is my NLOAD1 definition: And here is my Non-Linear subcase definition: Please let me know if you can help me identify the source of this error. Thanks in advance! Branden